It’s time to fall back — daylight saving time officially ends Sunday, Nov. 3 at 2:00 a.m., and while it’s helpful to get a few extra ZZZ’s, the change can throw off your sleep schedule. “Having that change in clock, actually your internal rhythm takes a little bit longer to catch up,” said Dr. Kelly Baron, a professor in the Department of Family and Preventative Medicine and a behavioral sleep specialist at University of Utah Health.