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When do the clocks go forward?

On Sunday 31st March, the clocks 'spring forward' by one hour, marking the annual move from Greenwich Mean Time (GMT) to British Summer Time (BST).

The first BST clock change happened over 100 years ago in 1916, but the changes still confuse people each year. So, we aim to clear up any confusion about what time the clocks change, whether our moods improve, and find out if Stonehenge really gets re-arranged when the clocks go forward!

A yellow alarm clock on a background filled with yellow flowers.

Myths about the clocks going forward

1. The clocks go forward at 2am - FALSE
A tweet on a blue background with alarm clocks on it - the tweet says 'Remember UK people, clocks got forward at 2am. Loose an hours sleep'

People are often confused (or forget!) about the exact time that clocks change, is it midnight, 1am or 2am? Thankfully, we can clear this one up quite easily. The clocks go forward at 1am on the last Sunday of March, and they go back one hour at 2am in autumn.

Sadly, for those of us who like a lie-in, the clock change in spring does mean we get one hour less sleep. But don't worry, most mobile phones automatically adjust at 1am, so your alarm will switch too – you've got no excuse for being late to breakfast!

Remember, there are lots of fun things you can do to make the most of that extra hour of daylight!

2. The extra daylight helps boost our mood - TRUE!
A tweet on a blue background with alarm clocks on it - the tweet says 'Welcome back to our old friend British Summer Time. Bringer of another hour of mood-lifting sunlight.

The evenings start to get lighter after the shortest day, which is usually December 21st or 22nd, but we see the biggest increase in daylight when the clocks go forward in March. So, although days have been gradually getting longer for a few months, many of us will start to feel the benefits of the extra daylight in the evenings once the clocks change, including more sunlight (fingers crossed!).

According to the NHS, a lack of sunlight may lead to lower serotonin levels, which is linked to feelings of depression, but getting outside, especially if exercising, has many mood-boosting benefits. So, why not put on some sun cream and spend that extra hour of daylight with your mates in the great outdoors!

3. Stonehenge was moved to line up with the summer solstice - FALSE
A tweet on a blue background with alarm clocks on it - the tweet says 'After the start of British Summer Time in 1916, the stones at Stonehenge didn't line up on the solstice, so in 1920 they decided to move them to line up, as shown in this photo from the official archives.' There is also a black and white photograph of some people working on Stonehenge with a crane.

The world famous stone circle, Stonehenge in Wiltshire, is thousands of years old. Historians say that it was built to align with the sunrise on the summer solstice – the longest day – with thousands of people gathering on the longest day, usually June 20th or 21st, to see the phenomenon. But the rumours that Stonehenge was moved to line up with the hour change simply aren't true.

The photographs that helped to spark the rumours were actually taken in 1919 when vital conservation work was carried out on the world famous stones. We can well and truly put this myth to bed(rock)!

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