Daylight saving time changes worldwide

There are 109 clock changes across 12 dates in the next twelve months. Each one makes a day 23 or 25 hours long somewhere.

Next change

The next clock change is on 20 September 2026, affecting 1 time zone.

The next twelve months

DateZonesDirectionDay length
20 September 20261back25 hours
27 September 20261forward23 hours
4 October 20264forward23 hours
25 October 202633back25 hours
30 October 20261back25 hours
1 November 202614back25 hours
14 March 202714forward23 hours
26 March 20271forward23 hours
28 March 202732forward23 hours
4 April 20276back25 hours
30 April 20271forward23 hours
5 September 20271forward23 hours

What a clock change does to a day

On the day a region moves onto summer time its civil day is 23 hours long. On the day it moves off, the day is 25 hours long and one hour occurs twice. Meridian draws the day that actually exists rather than assuming a fixed grid, which is why the board shows 23, 24, or 25 columns depending on the date.

See local time by city for the transition dates that apply to a specific place.