For many people, the first Monday after Daylight Savings Time can be very hard. Even though the time officially changes on Saturday night, fewer people have set schedules for Sunday, and therefore end up feeling like maybe they missed an hour of their day, but don’t really notice getting up an hour earlier until their alarm goes off on Monday.
I have found that making myself get up on that first Sunday (and I do have someplace to be) really helps me with the transition to Monday. I’m tired enough Sunday night to go to bed at the right time.