Clocks spring forward Sun. as daylight saving time begins
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The most dramatic shift comes when the clocks spring forward. In the USA, they move to daylight saving time, with most of the country shifting their clocks forwards an hour. This year it happens this weekend, on Sunday, March 8 at 2am, although Hawaii and most of Arizona don't do this.
Here, the time shifts from Greenwich Mean Time (GMT) to British Summer Time, though this happens later than in the US. This year, Britons will experience the change on March 29, with the adjustment remaining in effect until 25 October, when clocks will revert to GMT, reports Bristol Live.