diff --git a/manual-install/latest-arm64.yml b/manual-install/latest-arm64.yml
index 7330df3a..86c5f4fb 100644
--- a/manual-install/latest-arm64.yml
+++ b/manual-install/latest-arm64.yml
@@ -16,6 +16,7 @@ services:
       - COLLABORA_HOST=nextcloud-aio-collabora
       - TALK_HOST=nextcloud-aio-talk
       - APACHE_PORT=${APACHE_PORT}
+      - TZ=${TIMEZONE}
     volumes:
       - nextcloud_aio_nextcloud:/var/www/html:ro
       - nextcloud_aio_apache:/mnt/data:rw
@@ -34,6 +35,8 @@ services:
       - POSTGRES_PASSWORD=${DATABASE_PASSWORD}
       - POSTGRES_DB=nextcloud_database
       - POSTGRES_USER=nextcloud
+      - TZ=${TIMEZONE}
+      - PGTZ=${TIMEZONE}
     stop_grace_period: 1800s
     restart: unless-stopped
     networks:
@@ -71,6 +74,7 @@ services:
       - COLLABORA_HOST=nextcloud-aio-collabora
       - TALK_ENABLED=${TALK_ENABLED}
       - DAILY_BACKUP_RUNNING=${DAILY_BACKUP_RUNNING}
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
@@ -81,6 +85,7 @@ services:
     image: nextcloud/aio-redis:latest-arm64
     environment:
       - REDIS_HOST_PASSWORD=${REDIS_PASSWORD}
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
@@ -92,6 +97,7 @@ services:
     environment:
       - aliasgroup1=https://${NC_DOMAIN}:443
       - extra_params=--o:ssl.enable=false --o:ssl.termination=true --o:logging.level=warning
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
@@ -108,6 +114,7 @@ services:
       - TURN_SECRET=${TURN_SECRET}
       - SIGNALING_SECRET=${SIGNALING_SECRET}
       - JANUS_API_KEY=${JANUS_API_KEY}
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
diff --git a/manual-install/latest.yml b/manual-install/latest.yml
index 0d8bac53..3cf63f82 100644
--- a/manual-install/latest.yml
+++ b/manual-install/latest.yml
@@ -19,6 +19,7 @@ services:
       - TALK_HOST=nextcloud-aio-talk
       - APACHE_PORT=${APACHE_PORT}
       - ONLYOFFICE_HOST=nextcloud-aio-onlyoffice
+      - TZ=${TIMEZONE}
     volumes:
       - nextcloud_aio_nextcloud:/var/www/html:ro
       - nextcloud_aio_apache:/mnt/data:rw
@@ -37,6 +38,8 @@ services:
       - POSTGRES_PASSWORD=${DATABASE_PASSWORD}
       - POSTGRES_DB=nextcloud_database
       - POSTGRES_USER=nextcloud
+      - TZ=${TIMEZONE}
+      - PGTZ=${TIMEZONE}
     stop_grace_period: 1800s
     restart: unless-stopped
     networks:
@@ -78,6 +81,7 @@ services:
       - TALK_ENABLED=${TALK_ENABLED}
       - ONLYOFFICE_HOST=nextcloud-aio-onlyoffice
       - DAILY_BACKUP_RUNNING=${DAILY_BACKUP_RUNNING}
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
@@ -88,6 +92,7 @@ services:
     image: nextcloud/aio-redis:latest
     environment:
       - REDIS_HOST_PASSWORD=${REDIS_PASSWORD}
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
@@ -99,6 +104,7 @@ services:
     environment:
       - aliasgroup1=https://${NC_DOMAIN}:443
       - extra_params=--o:ssl.enable=false --o:ssl.termination=true --o:logging.level=warning
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
@@ -115,6 +121,7 @@ services:
       - TURN_SECRET=${TURN_SECRET}
       - SIGNALING_SECRET=${SIGNALING_SECRET}
       - JANUS_API_KEY=${JANUS_API_KEY}
+      - TZ=${TIMEZONE}
     stop_grace_period: 10s
     restart: unless-stopped
     networks:
@@ -123,6 +130,8 @@ services:
   nextcloud-aio-clamav:
     container_name: nextcloud-aio-clamav
     image: nextcloud/aio-clamav:latest
+    environment:
+      - TZ=${TIMEZONE}
     volumes:
       - nextcloud_aio_clamav:/var/lib/clamav:rw
     stop_grace_period: 10s
@@ -133,6 +142,8 @@ services:
   nextcloud-aio-onlyoffice:
     container_name: nextcloud-aio-onlyoffice
     image: nextcloud/aio-onlyoffice:latest
+    environment:
+      - TZ=${TIMEZONE}
     volumes:
       - nextcloud_aio_onlyoffice:/var/lib/onlyoffice:rw
     stop_grace_period: 10s
diff --git a/manual-install/sample.conf b/manual-install/sample.conf
index f3968aee..c7f5654c 100644
--- a/manual-install/sample.conf
+++ b/manual-install/sample.conf
@@ -14,4 +14,5 @@ ONLYOFFICE_ENABLED=no          # Setting this to "yes" enables the option in Nex
 REDIS_PASSWORD=          # TODO! This needs to be a unique and good password!
 SIGNALING_SECRET=          # TODO! This needs to be a unique and good password!
 TALK_ENABLED=yes          # Setting this to "yes" enables the option in Nextcloud automatically.
+TIMEZONE=Europe/Berlin          # TODO! This is the timezone that your containers will use.
 TURN_SECRET=          # TODO! This needs to be a unique and good password!