Spring forward to Summer!

In the wee small hours of Sunday morning, the clocks will go forward by an hour, marking the beginning – at last – of British Summer Time.

Mar 29, 2015 – Daylight Saving Time Starts

When local standard time is about to reach Sunday, March 29, 2015, 1:00:00 am clocks are turned forward 1 hour to  Sunday, March 29, 2015, 2:00:00 am local daylight time instead

Sunrise and sunset will be about 1 hour later on Mar 29, 2015 than the day before. There will be more light in the evening.

Also called Spring Forward, summer time, and Daylight Savings Time.

Spring forward clock

AND THEN, 7 MONTHS LATER:

Oct 25

Back 1 hour

Oct 25, 2015 – Daylight Saving Time Ends

When local daylight time is about to reach
Sunday, October 25, 2015, 2:00:00 am clocks are turned backward 1 hour to
Sunday, October 25, 2015, 1:00:00 amlocal standard time instead

Sunrise and sunset will be about 1 hour earlier on Oct 25, 2015 than the day before. There will be more light in the morning.

Also called Fall Back and winter time.