diff --git a/realtime/settings.py b/realtime/settings.py
index 78937ca..937e868 100644
--- a/realtime/settings.py
+++ b/realtime/settings.py
@@ -108,7 +108,7 @@ AUTH_PASSWORD_VALIDATORS = [
 
 LANGUAGE_CODE = 'en-us'
 
-TIME_ZONE = 'UTC'
+TIME_ZONE = os.environ.get('TZ', 'UTC')
 
 USE_I18N = True