diff --git a/ct/adguard-v5.sh b/ct/adguard-v5.sh
index 32b043ef66..b642f68004 100644
--- a/ct/adguard-v5.sh
+++ b/ct/adguard-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/alpine-v5.sh b/ct/alpine-v5.sh
index 3c42c898f5..349f840fe9 100644
--- a/ct/alpine-v5.sh
+++ b/ct/alpine-v5.sh
@@ -28,7 +28,7 @@ var_os="alpine"
 var_version="3.17"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/alpine-vaultwarden-v5.sh b/ct/alpine-vaultwarden-v5.sh
index 06df8c11f1..37f1149302 100644
--- a/ct/alpine-vaultwarden-v5.sh
+++ b/ct/alpine-vaultwarden-v5.sh
@@ -27,7 +27,7 @@ var_os="alpine"
 var_version="3.17"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/archlinux-v5.sh b/ct/archlinux-v5.sh
index 99b50c6ea5..69b8263989 100644
--- a/ct/archlinux-v5.sh
+++ b/ct/archlinux-v5.sh
@@ -27,7 +27,7 @@ var_os="archlinux"
 var_version="base"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/audiobookshelf-v5.sh b/ct/audiobookshelf-v5.sh
index 98128a73ed..a9790f62d6 100644
--- a/ct/audiobookshelf-v5.sh
+++ b/ct/audiobookshelf-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/autobrr-v5.sh b/ct/autobrr-v5.sh
index bdb2b666f0..36f1d9b275 100644
--- a/ct/autobrr-v5.sh
+++ b/ct/autobrr-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/blocky-v5.sh b/ct/blocky-v5.sh
index 573e06b0c4..cbbb49fff2 100644
--- a/ct/blocky-v5.sh
+++ b/ct/blocky-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/casaos-v5.sh b/ct/casaos-v5.sh
index 1e59b4ae07..ee8ab94a01 100644
--- a/ct/casaos-v5.sh
+++ b/ct/casaos-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/changedetection-v5.sh b/ct/changedetection-v5.sh
index 1ba4ed721e..7283f9091c 100644
--- a/ct/changedetection-v5.sh
+++ b/ct/changedetection-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/cronicle-v5.sh b/ct/cronicle-v5.sh
index ac90461a0d..06918b5517 100644
--- a/ct/cronicle-v5.sh
+++ b/ct/cronicle-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/daemonsync-v5.sh b/ct/daemonsync-v5.sh
index 196fe544e0..aa53ad773b 100644
--- a/ct/daemonsync-v5.sh
+++ b/ct/daemonsync-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/dashy-v5.sh b/ct/dashy-v5.sh
index afd67aaee4..6a8c85b295 100644
--- a/ct/dashy-v5.sh
+++ b/ct/dashy-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/debian-v5.sh b/ct/debian-v5.sh
index 278f8bb94e..54cc597601 100644
--- a/ct/debian-v5.sh
+++ b/ct/debian-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/deconz-v5.sh b/ct/deconz-v5.sh
index 38df740be4..86fda9a625 100644
--- a/ct/deconz-v5.sh
+++ b/ct/deconz-v5.sh
@@ -27,7 +27,7 @@ var_os="ubuntu"
 var_version="20.04"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/deluge-v5.sh b/ct/deluge-v5.sh
index fd515d6191..11d82a663f 100644
--- a/ct/deluge-v5.sh
+++ b/ct/deluge-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/devuan-v5.sh b/ct/devuan-v5.sh
index 29ee1464f0..2b124e54c8 100644
--- a/ct/devuan-v5.sh
+++ b/ct/devuan-v5.sh
@@ -27,7 +27,7 @@ var_os="devuan"
 var_version="4.0"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/docker-v5.sh b/ct/docker-v5.sh
index a5183550d9..e0f399520e 100644
--- a/ct/docker-v5.sh
+++ b/ct/docker-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/emby-v5.sh b/ct/emby-v5.sh
index dd20a0b376..ec6c54f569 100644
--- a/ct/emby-v5.sh
+++ b/ct/emby-v5.sh
@@ -27,7 +27,7 @@ var_os="ubuntu"
 var_version="20.04"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/emqx-v5.sh b/ct/emqx-v5.sh
index 4828a5b4a5..22f05ffc4b 100644
--- a/ct/emqx-v5.sh
+++ b/ct/emqx-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/esphome-v5.sh b/ct/esphome-v5.sh
index e9ca6cf25e..e75e9f07b5 100644
--- a/ct/esphome-v5.sh
+++ b/ct/esphome-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/go2rtc-v5.sh b/ct/go2rtc-v5.sh
index 3efc59bfbb..11af631309 100644
--- a/ct/go2rtc-v5.sh
+++ b/ct/go2rtc-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/grafana-v5.sh b/ct/grafana-v5.sh
index f94b18e7c6..ccddc65d4e 100644
--- a/ct/grafana-v5.sh
+++ b/ct/grafana-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/grocy-v5.sh b/ct/grocy-v5.sh
index 2525cdb219..02944358c6 100644
--- a/ct/grocy-v5.sh
+++ b/ct/grocy-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/heimdalldashboard-v5.sh b/ct/heimdalldashboard-v5.sh
index 656db61ae4..b09170c60c 100644
--- a/ct/heimdalldashboard-v5.sh
+++ b/ct/heimdalldashboard-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/homeassistant-core-v5.sh b/ct/homeassistant-core-v5.sh
index 40c2d5d11c..81ac9bb9ea 100644
--- a/ct/homeassistant-core-v5.sh
+++ b/ct/homeassistant-core-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/homeassistant-v5.sh b/ct/homeassistant-v5.sh
index 5537dc7e01..da4c31ede7 100644
--- a/ct/homeassistant-v5.sh
+++ b/ct/homeassistant-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/homebridge-v5.sh b/ct/homebridge-v5.sh
index cf330c37d7..e77dbc5153 100644
--- a/ct/homebridge-v5.sh
+++ b/ct/homebridge-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/homepage-v5.sh b/ct/homepage-v5.sh
index 8ef34ca238..32bc3745e8 100644
--- a/ct/homepage-v5.sh
+++ b/ct/homepage-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/homer-v5.sh b/ct/homer-v5.sh
index fcf78f8874..bca46fb8b2 100644
--- a/ct/homer-v5.sh
+++ b/ct/homer-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/hyperion-v5.sh b/ct/hyperion-v5.sh
index ada0c0d779..f57f81b0c7 100644
--- a/ct/hyperion-v5.sh
+++ b/ct/hyperion-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/influxdb-v5.sh b/ct/influxdb-v5.sh
index 74d8063ee3..7306046c6c 100644
--- a/ct/influxdb-v5.sh
+++ b/ct/influxdb-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/iobroker-v5.sh b/ct/iobroker-v5.sh
index f022bcb423..77e5a5e83c 100644
--- a/ct/iobroker-v5.sh
+++ b/ct/iobroker-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/jackett-v5.sh b/ct/jackett-v5.sh
index 554548b5ad..485c97cf47 100644
--- a/ct/jackett-v5.sh
+++ b/ct/jackett-v5.sh
@@ -26,7 +26,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/jellyfin-v5.sh b/ct/jellyfin-v5.sh
index 5af15bc03b..d124f71a1b 100644
--- a/ct/jellyfin-v5.sh
+++ b/ct/jellyfin-v5.sh
@@ -28,7 +28,7 @@ var_os="ubuntu"
 var_version="20.04"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/k0s-v5.sh b/ct/k0s-v5.sh
index 9cf74443e2..510c5aba82 100644
--- a/ct/k0s-v5.sh
+++ b/ct/k0s-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/kavita-v5.sh b/ct/kavita-v5.sh
index d1869d7bc2..d2a0aee07b 100644
--- a/ct/kavita-v5.sh
+++ b/ct/kavita-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/keycloak-v5.sh b/ct/keycloak-v5.sh
index 8f0ebe5c27..65043f3889 100644
--- a/ct/keycloak-v5.sh
+++ b/ct/keycloak-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/lidarr-v5.sh b/ct/lidarr-v5.sh
index 0383aded6c..c5973a7405 100644
--- a/ct/lidarr-v5.sh
+++ b/ct/lidarr-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/magicmirror-v5.sh b/ct/magicmirror-v5.sh
index 606b6b412e..8da28b4926 100644
--- a/ct/magicmirror-v5.sh
+++ b/ct/magicmirror-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/mariadb-v5.sh b/ct/mariadb-v5.sh
index 5e1dd9ab09..ca18035a02 100644
--- a/ct/mariadb-v5.sh
+++ b/ct/mariadb-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/meshcentral-v5.sh b/ct/meshcentral-v5.sh
index 336e5d9fd2..be01720263 100644
--- a/ct/meshcentral-v5.sh
+++ b/ct/meshcentral-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/motioneye-v5.sh b/ct/motioneye-v5.sh
index e000822a2d..907f918282 100644
--- a/ct/motioneye-v5.sh
+++ b/ct/motioneye-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/mqtt-v5.sh b/ct/mqtt-v5.sh
index a43ce1b94b..e16e0acd52 100644
--- a/ct/mqtt-v5.sh
+++ b/ct/mqtt-v5.sh
@@ -26,7 +26,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/n8n-v5.sh b/ct/n8n-v5.sh
index cac60cdce8..046c20c76e 100644
--- a/ct/n8n-v5.sh
+++ b/ct/n8n-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/navidrome-v5.sh b/ct/navidrome-v5.sh
index 4cb572226b..99606d1716 100644
--- a/ct/navidrome-v5.sh
+++ b/ct/navidrome-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/nextcloudpi-v5.sh b/ct/nextcloudpi-v5.sh
index 1e663eaa31..4087e1912c 100644
--- a/ct/nextcloudpi-v5.sh
+++ b/ct/nextcloudpi-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/nginxproxymanager-v5.sh b/ct/nginxproxymanager-v5.sh
index 71d7c8e67b..e2a6f42142 100644
--- a/ct/nginxproxymanager-v5.sh
+++ b/ct/nginxproxymanager-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/nocodb-v5.sh b/ct/nocodb-v5.sh
index af3432804d..7f5cc1b422 100644
--- a/ct/nocodb-v5.sh
+++ b/ct/nocodb-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/node-red-v5.sh b/ct/node-red-v5.sh
index 7051fbf280..6fae862401 100644
--- a/ct/node-red-v5.sh
+++ b/ct/node-red-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/omada-v5.sh b/ct/omada-v5.sh
index 1f7b2c6dfd..e3b04bc120 100644
--- a/ct/omada-v5.sh
+++ b/ct/omada-v5.sh
@@ -27,7 +27,7 @@ var_os="ubuntu"
 var_version="20.04"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/omv-v5.sh b/ct/omv-v5.sh
index f98708b7df..542c9fa324 100644
--- a/ct/omv-v5.sh
+++ b/ct/omv-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/openhab-v5.sh b/ct/openhab-v5.sh
index a21c2b72f8..23f0c17756 100644
--- a/ct/openhab-v5.sh
+++ b/ct/openhab-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/paperless-ngx-v5.sh b/ct/paperless-ngx-v5.sh
index 1f0d2ce0ca..4ffeb59a78 100644
--- a/ct/paperless-ngx-v5.sh
+++ b/ct/paperless-ngx-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/photoprism-v5.sh b/ct/photoprism-v5.sh
index 21de93796c..d182a728c2 100644
--- a/ct/photoprism-v5.sh
+++ b/ct/photoprism-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/pihole-v5.sh b/ct/pihole-v5.sh
index 2838c25472..486e2d2852 100644
--- a/ct/pihole-v5.sh
+++ b/ct/pihole-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/plex-v5.sh b/ct/plex-v5.sh
index 77f384ed32..62243b5541 100644
--- a/ct/plex-v5.sh
+++ b/ct/plex-v5.sh
@@ -27,7 +27,7 @@ var_os="ubuntu"
 var_version="20.04"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/podman-homeassistant-v5.sh b/ct/podman-homeassistant-v5.sh
index a7beabb331..9553f22974 100644
--- a/ct/podman-homeassistant-v5.sh
+++ b/ct/podman-homeassistant-v5.sh
@@ -31,7 +31,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/podman-v5.sh b/ct/podman-v5.sh
index 05cd6537dc..a388ea5ff5 100644
--- a/ct/podman-v5.sh
+++ b/ct/podman-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/postgresql-v5.sh b/ct/postgresql-v5.sh
index 91bf1f6a1a..d8072ccfe5 100644
--- a/ct/postgresql-v5.sh
+++ b/ct/postgresql-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/prometheus-v5.sh b/ct/prometheus-v5.sh
index a55e74cc2c..d0977b6ca9 100644
--- a/ct/prometheus-v5.sh
+++ b/ct/prometheus-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/prowlarr-v5.sh b/ct/prowlarr-v5.sh
index c23b23a5fe..e73b72498a 100644
--- a/ct/prowlarr-v5.sh
+++ b/ct/prowlarr-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/qbittorrent-v5.sh b/ct/qbittorrent-v5.sh
index ef84f26acb..5eb36c3736 100644
--- a/ct/qbittorrent-v5.sh
+++ b/ct/qbittorrent-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/radarr-v5.sh b/ct/radarr-v5.sh
index 77559143c4..cf7cf23f10 100644
--- a/ct/radarr-v5.sh
+++ b/ct/radarr-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/readarr-v5.sh b/ct/readarr-v5.sh
index 7ab4090159..4b32964c77 100644
--- a/ct/readarr-v5.sh
+++ b/ct/readarr-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/rockylinux-v5.sh b/ct/rockylinux-v5.sh
index ddd6517b5c..96f1f30ec1 100644
--- a/ct/rockylinux-v5.sh
+++ b/ct/rockylinux-v5.sh
@@ -28,7 +28,7 @@ var_os="rockylinux"
 var_version="9"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/rstptoweb-v5.sh b/ct/rstptoweb-v5.sh
index 670fbe2d39..e0bebee4b9 100644
--- a/ct/rstptoweb-v5.sh
+++ b/ct/rstptoweb-v5.sh
@@ -26,7 +26,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/sabnzbd-v5.sh b/ct/sabnzbd-v5.sh
index 3076ab5263..a3f9457db5 100644
--- a/ct/sabnzbd-v5.sh
+++ b/ct/sabnzbd-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/scrypted-v5.sh b/ct/scrypted-v5.sh
index aff8cf7bfb..1021fd8c67 100644
--- a/ct/scrypted-v5.sh
+++ b/ct/scrypted-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/shinobi-v5.sh b/ct/shinobi-v5.sh
index 9d854a571d..f24118555d 100644
--- a/ct/shinobi-v5.sh
+++ b/ct/shinobi-v5.sh
@@ -27,7 +27,7 @@ var_os="ubuntu"
 var_version="22.04"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/sonarr-v5.sh b/ct/sonarr-v5.sh
index 608ce71813..f7f6d4b3c4 100644
--- a/ct/sonarr-v5.sh
+++ b/ct/sonarr-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/syncthing-v5.sh b/ct/syncthing-v5.sh
index 4997662aab..780653b1b8 100644
--- a/ct/syncthing-v5.sh
+++ b/ct/syncthing-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/tdarr-v5.sh b/ct/tdarr-v5.sh
index eb31111215..d15c5de08f 100644
--- a/ct/tdarr-v5.sh
+++ b/ct/tdarr-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/technitiumdns-v5.sh b/ct/technitiumdns-v5.sh
index e05f3be3a4..6927ee63f6 100644
--- a/ct/technitiumdns-v5.sh
+++ b/ct/technitiumdns-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/transmission-v5.sh b/ct/transmission-v5.sh
index b1f3aab6a4..a7aad0ce17 100644
--- a/ct/transmission-v5.sh
+++ b/ct/transmission-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/trilium-v5.sh b/ct/trilium-v5.sh
index 28b04449f0..688a2a60ac 100644
--- a/ct/trilium-v5.sh
+++ b/ct/trilium-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/ubuntu-v5.sh b/ct/ubuntu-v5.sh
index 7319b8f229..3a07a06bbd 100644
--- a/ct/ubuntu-v5.sh
+++ b/ct/ubuntu-v5.sh
@@ -27,7 +27,7 @@ var_os="ubuntu"
 var_version="22.04"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/umbrel-v5.sh b/ct/umbrel-v5.sh
index c45af0b56c..6adff888a7 100644
--- a/ct/umbrel-v5.sh
+++ b/ct/umbrel-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/unifi-v5.sh b/ct/unifi-v5.sh
index b91ad8c28d..2b2995293d 100644
--- a/ct/unifi-v5.sh
+++ b/ct/unifi-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/uptimekuma-v5.sh b/ct/uptimekuma-v5.sh
index 7659983d71..ad5cc72471 100644
--- a/ct/uptimekuma-v5.sh
+++ b/ct/uptimekuma-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/vaultwarden-v5.sh b/ct/vaultwarden-v5.sh
index 135bbe1b0e..055e893df6 100644
--- a/ct/vaultwarden-v5.sh
+++ b/ct/vaultwarden-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/whisparr-v5.sh b/ct/whisparr-v5.sh
index a31ac00516..1f51216cd3 100644
--- a/ct/whisparr-v5.sh
+++ b/ct/whisparr-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/whoogle-v5.sh b/ct/whoogle-v5.sh
index 4058cbe15d..93fc469b53 100644
--- a/ct/whoogle-v5.sh
+++ b/ct/whoogle-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/wikijs-v5.sh b/ct/wikijs-v5.sh
index 50da63bd90..685f8783ac 100644
--- a/ct/wikijs-v5.sh
+++ b/ct/wikijs-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/wireguard-v5.sh b/ct/wireguard-v5.sh
index 4522791f0f..cc16fabddf 100644
--- a/ct/wireguard-v5.sh
+++ b/ct/wireguard-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/yunohost-v5.sh b/ct/yunohost-v5.sh
index bf8f1798f6..5262913070 100644
--- a/ct/yunohost-v5.sh
+++ b/ct/yunohost-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/zigbee2mqtt-v5.sh b/ct/zigbee2mqtt-v5.sh
index 460c4980b1..53543482d8 100644
--- a/ct/zigbee2mqtt-v5.sh
+++ b/ct/zigbee2mqtt-v5.sh
@@ -28,7 +28,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/ct/zwave-js-ui-v5.sh b/ct/zwave-js-ui-v5.sh
index 23e88c382e..510cb5fcfa 100644
--- a/ct/zwave-js-ui-v5.sh
+++ b/ct/zwave-js-ui-v5.sh
@@ -27,7 +27,7 @@ var_os="debian"
 var_version="11"
 NSAPP=$(echo ${APP,,} | tr -d ' ')
 var_install="${NSAPP}-v5-install"
-timezone=$(timedatectl | grep "Time zone" | awk '{print $3}')
+timezone=$(cat /etc/timezone)
 INTEGER='^[0-9]+$'
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
diff --git a/install/adguard-v5-install.sh b/install/adguard-v5-install.sh
index ac6bf8fde8..ddb9f4bc11 100644
--- a/install/adguard-v5-install.sh
+++ b/install/adguard-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/audiobookshelf-v5-install.sh b/install/audiobookshelf-v5-install.sh
index c24e600cd2..c13f57e89a 100644
--- a/install/audiobookshelf-v5-install.sh
+++ b/install/audiobookshelf-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/autobrr-v5-install.sh b/install/autobrr-v5-install.sh
index 7446e75ea3..5b7e9d5202 100644
--- a/install/autobrr-v5-install.sh
+++ b/install/autobrr-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/blocky-v5-install.sh b/install/blocky-v5-install.sh
index 275f5e09b8..70788fde18 100644
--- a/install/blocky-v5-install.sh
+++ b/install/blocky-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/casaos-v5-install.sh b/install/casaos-v5-install.sh
index efda281c42..f94c4b3486 100644
--- a/install/casaos-v5-install.sh
+++ b/install/casaos-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/changedetection-v5-install.sh b/install/changedetection-v5-install.sh
index a400759a9a..3282316138 100644
--- a/install/changedetection-v5-install.sh
+++ b/install/changedetection-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/cronicle-v5-install.sh b/install/cronicle-v5-install.sh
index daba7eb752..63f13711ca 100644
--- a/install/cronicle-v5-install.sh
+++ b/install/cronicle-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/daemonsync-v5-install.sh b/install/daemonsync-v5-install.sh
index f92e786ce7..87b1bf6874 100644
--- a/install/daemonsync-v5-install.sh
+++ b/install/daemonsync-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/dashy-v5-install.sh b/install/dashy-v5-install.sh
index cec3a16f57..0835c349df 100644
--- a/install/dashy-v5-install.sh
+++ b/install/dashy-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/debian-v5-install.sh b/install/debian-v5-install.sh
index 53f5a8752d..8d8c09e09c 100644
--- a/install/debian-v5-install.sh
+++ b/install/debian-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/deconz-v5-install.sh b/install/deconz-v5-install.sh
index bdef4d6cbf..391c2857b4 100644
--- a/install/deconz-v5-install.sh
+++ b/install/deconz-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/deluge-v5-install.sh b/install/deluge-v5-install.sh
index 42325e533d..fcfb590d96 100644
--- a/install/deluge-v5-install.sh
+++ b/install/deluge-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/docker-v5-install.sh b/install/docker-v5-install.sh
index 906534e226..4a50c10dc1 100644
--- a/install/docker-v5-install.sh
+++ b/install/docker-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/emby-v5-install.sh b/install/emby-v5-install.sh
index 41bedf3dec..600df6cd55 100644
--- a/install/emby-v5-install.sh
+++ b/install/emby-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/emqx-v5-install.sh b/install/emqx-v5-install.sh
index 8c79171013..0f51f30caf 100644
--- a/install/emqx-v5-install.sh
+++ b/install/emqx-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/esphome-v5-install.sh b/install/esphome-v5-install.sh
index d653ee25a2..62d289b74b 100644
--- a/install/esphome-v5-install.sh
+++ b/install/esphome-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/go2rtc-v5-install.sh b/install/go2rtc-v5-install.sh
index 51d6831fa9..d06fe33c1f 100644
--- a/install/go2rtc-v5-install.sh
+++ b/install/go2rtc-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/grafana-v5-install.sh b/install/grafana-v5-install.sh
index f09c81a71d..5dc1ed99d5 100644
--- a/install/grafana-v5-install.sh
+++ b/install/grafana-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/grocy-v5-install.sh b/install/grocy-v5-install.sh
index 92242165bc..adf67d9a74 100644
--- a/install/grocy-v5-install.sh
+++ b/install/grocy-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/heimdalldashboard-v5-install.sh b/install/heimdalldashboard-v5-install.sh
index f287b68730..7f2fa02e9c 100644
--- a/install/heimdalldashboard-v5-install.sh
+++ b/install/heimdalldashboard-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/homeassistant-core-v5-install.sh b/install/homeassistant-core-v5-install.sh
index a1190ce0ca..614c3576e5 100644
--- a/install/homeassistant-core-v5-install.sh
+++ b/install/homeassistant-core-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/homeassistant-v5-install.sh b/install/homeassistant-v5-install.sh
index 5f8fe84336..07c8707af8 100644
--- a/install/homeassistant-v5-install.sh
+++ b/install/homeassistant-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/homebridge-v5-install.sh b/install/homebridge-v5-install.sh
index b150c16392..9fda9f34b2 100644
--- a/install/homebridge-v5-install.sh
+++ b/install/homebridge-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/homepage-v5-install.sh b/install/homepage-v5-install.sh
index 0b261e03bf..8f07e05f1d 100644
--- a/install/homepage-v5-install.sh
+++ b/install/homepage-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/homer-v5-install.sh b/install/homer-v5-install.sh
index 23831e7858..4b5d77fc11 100644
--- a/install/homer-v5-install.sh
+++ b/install/homer-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/hyperion-v5-install.sh b/install/hyperion-v5-install.sh
index 580817b759..828a56303f 100644
--- a/install/hyperion-v5-install.sh
+++ b/install/hyperion-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/influxdb-v5-install.sh b/install/influxdb-v5-install.sh
index 4280456a23..4ef3826e34 100644
--- a/install/influxdb-v5-install.sh
+++ b/install/influxdb-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/iobroker-v5-install.sh b/install/iobroker-v5-install.sh
index 6f9cda96fb..b541522f80 100644
--- a/install/iobroker-v5-install.sh
+++ b/install/iobroker-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/jackett-v5-install.sh b/install/jackett-v5-install.sh
index 9f257f5b08..711b3804db 100644
--- a/install/jackett-v5-install.sh
+++ b/install/jackett-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/jellyfin-v5-install.sh b/install/jellyfin-v5-install.sh
index 8faa5d278c..7f3667cbe5 100644
--- a/install/jellyfin-v5-install.sh
+++ b/install/jellyfin-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/k0s-v5-install.sh b/install/k0s-v5-install.sh
index 138d51ceee..9929af3706 100644
--- a/install/k0s-v5-install.sh
+++ b/install/k0s-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/kavita-v5-install.sh b/install/kavita-v5-install.sh
index 76fdf021a0..2bafec4036 100644
--- a/install/kavita-v5-install.sh
+++ b/install/kavita-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/keycloak-v5-install.sh b/install/keycloak-v5-install.sh
index 6858e15b99..33c4e567e2 100644
--- a/install/keycloak-v5-install.sh
+++ b/install/keycloak-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/lidarr-v5-install.sh b/install/lidarr-v5-install.sh
index aa990c170f..fb5c115901 100644
--- a/install/lidarr-v5-install.sh
+++ b/install/lidarr-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/magicmirror-v5-install.sh b/install/magicmirror-v5-install.sh
index 3dbaf0a6f9..e46fb200dd 100644
--- a/install/magicmirror-v5-install.sh
+++ b/install/magicmirror-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/mariadb-v5-install.sh b/install/mariadb-v5-install.sh
index db5eb16491..58031075d2 100644
--- a/install/mariadb-v5-install.sh
+++ b/install/mariadb-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/meshcentral-v5-install.sh b/install/meshcentral-v5-install.sh
index 7861a8fd6b..8508433033 100644
--- a/install/meshcentral-v5-install.sh
+++ b/install/meshcentral-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/motioneye-v5-install.sh b/install/motioneye-v5-install.sh
index f112d854e4..83cbd1c06e 100644
--- a/install/motioneye-v5-install.sh
+++ b/install/motioneye-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/mqtt-v5-install.sh b/install/mqtt-v5-install.sh
index 3be1d8a065..9e35158fba 100644
--- a/install/mqtt-v5-install.sh
+++ b/install/mqtt-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/n8n-v5-install.sh b/install/n8n-v5-install.sh
index fbafc2db02..60481d2af6 100644
--- a/install/n8n-v5-install.sh
+++ b/install/n8n-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/navidrome-v5-install.sh b/install/navidrome-v5-install.sh
index c6a7f04e89..a1a136fd04 100644
--- a/install/navidrome-v5-install.sh
+++ b/install/navidrome-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/nextcloudpi-v5-install.sh b/install/nextcloudpi-v5-install.sh
index 8d25928aa9..5382bf0075 100644
--- a/install/nextcloudpi-v5-install.sh
+++ b/install/nextcloudpi-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/nginxproxymanager-v5-install.sh b/install/nginxproxymanager-v5-install.sh
index 960bb71f1b..ce7e2cb446 100644
--- a/install/nginxproxymanager-v5-install.sh
+++ b/install/nginxproxymanager-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/nocodb-v5-install.sh b/install/nocodb-v5-install.sh
index 270436a809..b2a77d133d 100644
--- a/install/nocodb-v5-install.sh
+++ b/install/nocodb-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/node-red-v5-install.sh b/install/node-red-v5-install.sh
index fcc4c3711b..a843788182 100644
--- a/install/node-red-v5-install.sh
+++ b/install/node-red-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/omada-v5-install.sh b/install/omada-v5-install.sh
index ad68dec6bc..e7e3887830 100644
--- a/install/omada-v5-install.sh
+++ b/install/omada-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/omv-v5-install.sh b/install/omv-v5-install.sh
index d9169e751f..55aa1f09c6 100644
--- a/install/omv-v5-install.sh
+++ b/install/omv-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/openhab-v5-install.sh b/install/openhab-v5-install.sh
index 30b9f61db1..74372081dc 100644
--- a/install/openhab-v5-install.sh
+++ b/install/openhab-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/paperless-ngx-v5-install.sh b/install/paperless-ngx-v5-install.sh
index c48908f25d..6e7e3e49bb 100644
--- a/install/paperless-ngx-v5-install.sh
+++ b/install/paperless-ngx-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/photoprism-v5-install.sh b/install/photoprism-v5-install.sh
index b9c0782f1b..a51074ebe3 100644
--- a/install/photoprism-v5-install.sh
+++ b/install/photoprism-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/pihole-v5-install.sh b/install/pihole-v5-install.sh
index 5976ac9eb0..6e25aea0e7 100644
--- a/install/pihole-v5-install.sh
+++ b/install/pihole-v5-install.sh
@@ -48,7 +48,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/plex-v5-install.sh b/install/plex-v5-install.sh
index b15b104c12..701636a207 100644
--- a/install/plex-v5-install.sh
+++ b/install/plex-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/podman-homeassistant-v5-install.sh b/install/podman-homeassistant-v5-install.sh
index 599187247c..028781141a 100644
--- a/install/podman-homeassistant-v5-install.sh
+++ b/install/podman-homeassistant-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/podman-v5-install.sh b/install/podman-v5-install.sh
index 89114abaf1..b551de69db 100644
--- a/install/podman-v5-install.sh
+++ b/install/podman-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/postgresql-v5-install.sh b/install/postgresql-v5-install.sh
index 3c98caef59..6ac71f6e8a 100644
--- a/install/postgresql-v5-install.sh
+++ b/install/postgresql-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/prometheus-v5-install.sh b/install/prometheus-v5-install.sh
index 36ad41fc17..35434a3a33 100644
--- a/install/prometheus-v5-install.sh
+++ b/install/prometheus-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/prowlarr-v5-install.sh b/install/prowlarr-v5-install.sh
index 0877c3e921..7d4a80a44e 100644
--- a/install/prowlarr-v5-install.sh
+++ b/install/prowlarr-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/qbittorrent-v5-install.sh b/install/qbittorrent-v5-install.sh
index 7569b0fd50..955125444c 100644
--- a/install/qbittorrent-v5-install.sh
+++ b/install/qbittorrent-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/radarr-v5-install.sh b/install/radarr-v5-install.sh
index 7344a49674..6b73dfc488 100644
--- a/install/radarr-v5-install.sh
+++ b/install/radarr-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/readarr-v5-install.sh b/install/readarr-v5-install.sh
index c1fb8f8507..d6e2dea2c0 100644
--- a/install/readarr-v5-install.sh
+++ b/install/readarr-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/rstptoweb-v5-install.sh b/install/rstptoweb-v5-install.sh
index c0d51ac991..dbc1d606b2 100644
--- a/install/rstptoweb-v5-install.sh
+++ b/install/rstptoweb-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/sabnzbd-v5-install.sh b/install/sabnzbd-v5-install.sh
index 9434927a8f..e135afb63c 100644
--- a/install/sabnzbd-v5-install.sh
+++ b/install/sabnzbd-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/scrypted-v5-install.sh b/install/scrypted-v5-install.sh
index 42080a8382..1054b8d1b1 100644
--- a/install/scrypted-v5-install.sh
+++ b/install/scrypted-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/shinobi-v5-install.sh b/install/shinobi-v5-install.sh
index d0f77c28e5..ff165a748e 100644
--- a/install/shinobi-v5-install.sh
+++ b/install/shinobi-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/sonarr-v5-install.sh b/install/sonarr-v5-install.sh
index fb878c3ac7..955d0cc6ff 100644
--- a/install/sonarr-v5-install.sh
+++ b/install/sonarr-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/syncthing-v5-install.sh b/install/syncthing-v5-install.sh
index bc6edfbc5e..958a63f61a 100644
--- a/install/syncthing-v5-install.sh
+++ b/install/syncthing-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/tdarr-v5-install.sh b/install/tdarr-v5-install.sh
index 2a3ef8c495..79c00018d2 100644
--- a/install/tdarr-v5-install.sh
+++ b/install/tdarr-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/technitiumdns-v5-install.sh b/install/technitiumdns-v5-install.sh
index 4513b3db66..3650c52a27 100644
--- a/install/technitiumdns-v5-install.sh
+++ b/install/technitiumdns-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/transmission-v5-install.sh b/install/transmission-v5-install.sh
index e6fa975111..b370848507 100644
--- a/install/transmission-v5-install.sh
+++ b/install/transmission-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/trilium-v5-install.sh b/install/trilium-v5-install.sh
index ccb0f1afe6..aba37afabb 100644
--- a/install/trilium-v5-install.sh
+++ b/install/trilium-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/ubuntu-v5-install.sh b/install/ubuntu-v5-install.sh
index c77cadc840..19a880a3dd 100644
--- a/install/ubuntu-v5-install.sh
+++ b/install/ubuntu-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/umbrel-v5-install.sh b/install/umbrel-v5-install.sh
index d633194158..236d4a10d8 100644
--- a/install/umbrel-v5-install.sh
+++ b/install/umbrel-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/unifi-v5-install.sh b/install/unifi-v5-install.sh
index 54d9f90add..55a08456ad 100644
--- a/install/unifi-v5-install.sh
+++ b/install/unifi-v5-install.sh
@@ -48,7 +48,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/uptimekuma-v5-install.sh b/install/uptimekuma-v5-install.sh
index 6a175b1cf8..b0fdb9b417 100644
--- a/install/uptimekuma-v5-install.sh
+++ b/install/uptimekuma-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/vaultwarden-v5-install.sh b/install/vaultwarden-v5-install.sh
index 0da9f03c99..3c737500fa 100644
--- a/install/vaultwarden-v5-install.sh
+++ b/install/vaultwarden-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/whisparr-v5-install.sh b/install/whisparr-v5-install.sh
index 204074cf5b..0ba4954492 100644
--- a/install/whisparr-v5-install.sh
+++ b/install/whisparr-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/whoogle-v5-install.sh b/install/whoogle-v5-install.sh
index 40eec02953..6044e6d157 100644
--- a/install/whoogle-v5-install.sh
+++ b/install/whoogle-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/wikijs-v5-install.sh b/install/wikijs-v5-install.sh
index 09e417c6a7..2c5433ebce 100644
--- a/install/wikijs-v5-install.sh
+++ b/install/wikijs-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/wireguard-v5-install.sh b/install/wireguard-v5-install.sh
index 87e9bf3307..52a617b458 100644
--- a/install/wireguard-v5-install.sh
+++ b/install/wireguard-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/yunohost-v5-install.sh b/install/yunohost-v5-install.sh
index 19e7869dc9..b1baf04790 100644
--- a/install/yunohost-v5-install.sh
+++ b/install/yunohost-v5-install.sh
@@ -46,7 +46,8 @@ function msg_error() {
 msg_info "Setting up Container OS"
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/zigbee2mqtt-v5-install.sh b/install/zigbee2mqtt-v5-install.sh
index a7a38c91db..3bcde76846 100644
--- a/install/zigbee2mqtt-v5-install.sh
+++ b/install/zigbee2mqtt-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break
diff --git a/install/zwave-js-ui-v5-install.sh b/install/zwave-js-ui-v5-install.sh
index 83e8d30afc..e97b125d9f 100644
--- a/install/zwave-js-ui-v5-install.sh
+++ b/install/zwave-js-ui-v5-install.sh
@@ -47,7 +47,8 @@ function msg_error() {
 msg_info "Setting up Container OS "
 sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
 locale-gen >/dev/null
-timedatectl set-timezone $tz
+echo $tz > /etc/timezone
+ln -sf /usr/share/zoneinfo/$tz /etc/localtime
 for ((i=RETRY_NUM; i>0; i--)); do
   if [ "$(hostname -I)" != "" ]; then
     break