When do the clocks change?

The dates and exact times of the daylight saving changes in 2026 and 2027, calculated from the official time zone database. Our clock page also reminds you automatically two weeks before and after each change.

The rules behind the dates

Europe: all EU countries, the UK, Ireland and most of their neighbours change at the same moment, at 01:00 UTC on the last Sunday of March (forward) and the last Sunday of October (back). That is 02:00 in London, 03:00 in Berlin and 04:00 in Sofia or Athens, so the whole continent changes at once. In 2019 the European Parliament voted to end the seasonal clock changes, but the EU countries have not agreed on how, so the changes continue.

United States and Canada: clocks go forward at 02:00 local time on the second Sunday of March and back at 02:00 on the first Sunday of November. Each time zone changes at its own local 02:00, so the changes sweep across the continent over several hours. Arizona (except the Navajo Nation), Hawaii and most of Saskatchewan do not change.

Southern hemisphere: summer comes in the northern winter, so Australia, New Zealand, Chile and Paraguay move their clocks forward around September and October and back around March and April. For a few weeks each spring and autumn, the time differences between Europe, America and Australia are therefore unusual; our meeting planner handles this automatically.

Countries without daylight saving time

Most of the world does not change its clocks: nearly all of Asia and Africa, most of South America, and Russia (since 2014), Turkey (since 2016), Brazil (since 2019), most of Mexico (since 2022) and Iran (since 2022). Near the equator the length of the day hardly changes, so there is little reason to.

The dates above are calculated from the IANA time zone database used by computers and phones worldwide. Governments sometimes change their rules at short notice; the page follows those updates automatically.