diff --git a/Dockerfile b/Dockerfile
index e737354..737b04d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM mcr.microsoft.com/powershell:7.5-ubuntu-24.04
 USER root
 
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends ca-certificates \
+    && apt-get install -y --no-install-recommends tzdata \
     && apt-get dist-upgrade -y \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
diff --git a/Start-DoneTickNotifier.ps1 b/Start-DoneTickNotifier.ps1
index c39a512..10a14ca 100644
--- a/Start-DoneTickNotifier.ps1
+++ b/Start-DoneTickNotifier.ps1
@@ -109,6 +109,7 @@ while ($true) {
     }
 
     Write-Host "Finding next notification time..."
+    Write-Host "Current time: $(Get-Date)"
     $nextNotificationTomorrow = $true
     foreach($time in $notificationTimes)
     {
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 98bb9e9..702a23d 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -10,4 +10,5 @@ services:
       - DONETICKAPIKEY=adminpass # donetick API key
       - APPRISEWEBHOOKURL=https://apprisehost/notify/config # apprise notification url
       - APPRISEWEBHOOKTAG=all # apprise notification tag
-      - NOTIFICATIONTIMES=8,12,17 # hours when notifications will be sent
\ No newline at end of file
+      - NOTIFICATIONTIMES=8,12,17 # hours when notifications will be sent
+      - TZ=America/Chicago # set timezone from this list: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List
\ No newline at end of file