Twice a year we change our clocks in Britain - as we have done for generations.
To some, it seems pointless to spring the time forward by an hour in March and then pull it back in October. But others appreciate the extra daylight in the morning or evening.
On Sunday, the clocks are set to go forward as we move to When the clocks will go forward in 2019 and change to British Summer Time . It means the mornings will be temporarily darker, with additional day light in the evenings.
But the sun could be setting on daylight savings, as European Parliament MPs have voted to back a new law to permanently adopt summer or winter time, and stop the tradition of moving the clocks back and forth.
And, even if Britain leaves the EU - as it plans to - Westminster may follow Brussels' lead, to avoid having two different timezones in Ireland, as the Republic of Ireland will still be in the European Union after the UK leaves.
If the UK stuck with the clock changes and Ireland adopted the EU's proposal, then Northern Ireland and the Republic of Ireland would be in different time zones for the half of the year.
All 28 EU states currently switch to summer time on the last Sunday of March and back to winter time on the last Sunday of October.
Commission President Jean-Claude Juncker said "there is no applause when EU law dictates that Europeans have to change the clocks twice a year.
"Clock-changing must stop. Member states should themselves decide whether their citizens live in summer or winter time."
But some MEPs are critical, including Tory Jacqueline Foster.
She said: "Quite frankly, this is not a matter that should be decided in Brussels.
"This move is unwanted and unnecessary."
EU member states will have to approve the measure before it comes into force.
When the clocks will go forward in 2019 and change to British Summer Time
