what date to we change clocks back
When local daylight time is about to reach. Sunday, November 1, 2015, 2:00:00 AM clocks are turned backward 1 hour to. Sunday, November 1, 2015, 1:00:00 AM local standard time instead. Sunrise and sunset will be about 1 hour earlier on Nov 1, 2015 than the day before. There will be more light in the morning. Also called Fall Back and winter time.
At 2 a.m. on the second Sunday in March, we set our clocks forward one hour ahead of Standard Time (Spring forward, even though Spring doesn't begin until late March, over a week after the start of Daylight Saving Time).