Willett died before he saw his idea put into practise, but in 1916, parliament passed the Summer Time Act, establishing the biannual clock changes. In 1907, he wrote a pamphlet called ‘The Waste of Daylight,’ in which he explained that the extra hour will increase productivity and also save a considerable amount on lighting costs. The US, for example, moved into Daylight Saving time (DST) on Sunday 11th March, when their clocks also moved forward one hour.įun fact: Arizona and Hawaii are the only two US states that don’t change to DST, the former because it is so hot during the day that they don’t want to push sunset back an hour, and the latter because its proximity to the equator makes the whole exercise redundant.īenjamin Franklin, one of the Founding Fathers of the United States, is often (wrongly) credited with the idea, but in the UK, it was down to a builder called William Willett. This can get a bit confusing if you need to keep track of times in other countries, especially those that move in and out of different time zones themselves. In short, British Summer Time is the equivalent of GMT+1. GMT was formerly used as an international standard, and other time zones were measured against it, but that has been superseded by Coordinated Universal Time (UTC). GMT is the time zone the UK is in during the winter, while BST is the one used during the summer. What is the difference between Greenwich Mean Time and British Summer Time? Yes, calling autumn ‘fall’ is a bit of an Americanism, but ‘spring forward, autumn back’ ruins the pun, and it’s nowhere near as catchy. You may have heard the phrase ‘spring forward, fall back.’ It’s a handy way of remembering that the clocks go forward one hour in spring, and back one hour again in autumn. This marks the start of British Summer Time (BST), which lasts until the clocks go back again in the autumn and we revert to Greenwich Mean Time (GMT). This year, the clocks change in the early hours of Sunday 26th March 2023, when they go forward one hour, from 1am to 2am. To help you avoid getting to work late on the morning of the change, we’ve pulled together all the information you need to know exactly when and why the clocks go forward. That time when we will set our alarms to go off one hour earlier, just in case our smartphone clock doesn’t change automatically, even though it does year in, year out… It’s that time of year again when we lose an hour of sleep in exchange for the official start of British Summer Time.
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