If you have made it to this post you are probably a little frustrates about why your Google Apps Script time triggers are not running on or around the times that you have designated … To cut to the chase, the likely cause of clock triggers not running in the time range that you have selected is that the time zone in your Google Apps Script project is out.
Scott ‘Yagi’ Donald provides some very useful tips on how you can check and adjust your Apps Script project’s timezone.
Member of Google Developers Experts Program for Google Workspace (Google Apps Script) and interested in supporting Google Workspace Devs.