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In France, 3 a.m. on Sunday becomes 2 a.m

Every clock in the European Union falls back at the same instant

A legacy of energy crises

In 1916, with a war raging, France adopts summer time, a British idea, to save energy

It stays in place until 1945

Oil prices spike

In 1976, summer time returns, announced as temporary, to gain a little evening light

According to the European Commission, the savings remain marginal

Isolated health effects have been measured, without any firm conclusion

But respondents to a European consultation settle it: an overwhelming majority in favour of abolition

In 2019, the European Parliament votes to end it

Member states never agreed: the temporary measure is fifty years old