Changing the time like this is also done in about 70 other countries around the world.
Most countries in Europe do it, but there are a few like Russia, Iceland and Turkey that don’t.
Outside of Europe, parts of the USA and Canada as well as Latin America and the Caribbean use Daylight Saving Time.
Some parts of Australia change the clocks and Egypt is the only country in Africa to do so.
Some countries, such as Mexico, used to change the clocks but stopped.
Some people say that changing the clocks twice a year upsets the natural rhythm of sleep, which can lead to health problems.
However, others say that if the practice was stopped, darker mornings in winter would be more unsafe, for example on the roads when children travel to school.
In 2024, President Donald Trump suggested getting rid of Daylight Saving Time across the US.
