Why do the clocks change?

Why do the clocks change?
Reading Time: 5 minutes

The UK is one of several countries in the world to change the clocks according to the seasons. Read more fun facts for kids on why do the clocks change, and download a free time worksheet ideal for the classroom or at home.

Why do the clocks change?

The clocks change twice a year in the UK. Clocks go forward an hour at 1am on the last Sunday in March, and back an hour at 2am on the last Sunday in October. This is called daylight saving time (DST), daylight savings time, or daylight time. It lets us enjoy more daylight hours during summer and winter. In summer, we score an extra hour of light in the evenings, and in winter, sunrise arrives earlier.

How about using the clock change to help children understand more about telling the time? Here are some interesting facts to get you started…

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When do the clocks change in 2021?

On the last Sunday of March each year, the clocks go forward an hour to British Summer Time. This means sunrise and sunset appear an hour later in summer. Daylight saving time starts on Sunday, 28 March 2021, and ends on Sunday, 31 October 2021.

Who first thought of daylight saving time?

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In 1784 American inventor and statesman, Benjamin Franklin, had the bright idea of daylight saving as a smart way to save on candles. Over 100 years later in 1895 New Zealand astronomer and entomologist George Vernon Hudson suggested a two-hour shift backwards during summer to give him more time to go bug hunting after work.

However it was in 1907 after British builder William Willett published a pamphlet titled ‘The Waste of Daylight’ that the UK came around to the idea of daylight savings. Willet had been out horse-riding early one summer’s morning and noticed how many people were still asleep long after the sun was up. He suggested that turning the clocks forward during summer meant everyone could be up bright and early instead of snoozing away the daylight.

Learning tip: Download a free time printable worksheet ideal for ages 5-7 to help children learn more about telling the time.

When did daylight saving time start?

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In 1916 Germany became the first country to formally use daylight saving time to save on fuel during the First World War. The UK and several other European countries followed a few weeks later. Soon daylight savings became the norm, and the USA followed in 1918.

However, Canada beat everyone to it: In 1908 residents of Port Arthur, Ontario, turned their clocks forward one hour to start the world’s first daylight savings time.

Learning tip: Learn more about Canada and other countries of the world using our interactive GeoSafari® Jr. Talking Globe.

How many countries use daylight saving time?

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Only about 70 countries change their clocks and it’s mostly European and North American countries. When we’re changing our clocks to ‘fall back’ in the UK and Northern Hemisphere, they’re ‘springing forward’ in Southern Hemisphere countries like Australia and Namibia.

What happens when the clocks go back and forward?

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At 2am on the last Sunday in October every year, the clocks go back an hour. Aside from gaining an extra hour of sleep for one night, it means we gain an hour of sunlight in the mornings because sunrise arrives earlier in the day.

In reality, the UK goes from British Summer Time (BST) back to Greenwich Mean Time (GMT). Did you know that until the mid-19th century, many towns kept their own local time using the sun as a guide? Many UK castles, cathedrals and towns have sundials. Have you visited any of them?

Why do we use GMT?

From Big Ben in London to the Corpus Chronophage in Cambridge, the UK has some of the world’s most famous and interesting clocks. The UK was one of the first countries to standardise time throughout a region. This is what we now know as Greenwich Mean Time or GMT.

British railway companies began using GMT to make it easier for station masters, guards and passengers to understand and follow train timetables. In 1880 GMT became Britain’s legal standardised time.

Help children learn to tell the time

Use the clock changes to talk to your child about time. We have a several easy-to-use hands-on resources to help you and your child learn all about time! Find 4 ways to help children learning to tell the time and try our learning tips.

Learning tip: Help children understand the abstract concept of time through hands-on play. Tock the Learning Clock is ideal for children aged 3-7 to learn all about time at home. Turn the clock hands and Tock will announce the time. Kids can learn how to read both digital and analogue clocks. Tock also has a night light so little learners know when it’s time to get out of bed.

Learning Resources Tock the Learning Clock helps young children learn to tell the

Learning tip: The dual representation of numbers on a clock face can be confusing for some children to understand. On a clock face six is also 30 – and it’s also 18 if it’s a 24-hour clock. Our award-winning 24-Hour NumberLine Clock helps children see that a clock face is simply a circular number line.

This handy teaching clock comes with removable hands and clock faces. The faces unfurl into number lines chains that children can transform into a clock face. It’s the hands-on way to go from counting to telling the time!

Learning Resources 24-Hour NumberLine Clock for why do the clocks change

Learning tip: Once your little ones have grasped the concept of telling the time, it’s time to help them understand how time passes. The time tracker 2.0 is the perfect tool to help children measure and visualise time to give them an even clearer understanding of what happens when the clocks go back!

Learning Resources Time Tracker for learning to tell the time

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