When do the clocks fall back in 2021? Just a friendly reminder, don’t forget to turn your clocks back an hour on Sunday. Sunday, November 7, 2021 marks our official Fall Back date. If your clock(s) are not programmed to fall-back an hour at 2:00 AM, don't forget to manually set them back an hour. Our crews will be starting a little earlier with the time change. We will be starting at 6:30 AM. Share this post.