During Daylight Saving Time, clocks are turned forward an hour, effectively moving an hour of daylight from the morning to the evening. In the United States, Daylight Saving Time began on Sunday, March 9 and will revert to Standard Time on Sunday, November 2. In the European Union, Summertime began on Sunday, March 30, and will end on Sunday, October 26. Unlike the United States where time zone switches are staggered according to local time, all time zones in the European Union change at the same moment.