march, 2021 sun14mar3:00 amSpring 2021 Daylight Savings Time Begins3:00 am PDT Event DetailsDaylight Savings Time begins at 3AM on Sunday, March 14th. Make sure to set your clocks forward one hour. Event Details Daylight Savings Time begins at 3AM on Sunday, March 14th. Make sure to set your clocks forward one hour. Time(Sunday) 3:00 am PDT CalendarGoogleCal