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US Daylight Saving Time Dates

When the clocks next change, calculated from the current federal rule.

Daylight saving time in the United States begins on the second Sunday in March and ends on the first Sunday in November, both at 2:00 a.m. local time. The dates above are worked out from that rule rather than typed in, so the page never goes stale. Arizona and Hawaii sit it out entirely.

What actually happens at 2 a.m.

In March the clock jumps from 01:59 to 03:00, so that hour never exists — which is why alarms and scheduled jobs set for 02:30 misbehave once a year. In November 01:59 is followed by 01:00 again, so that hour happens twice. Because the change is at 2:00 a.m. local, it rolls across the country zone by zone rather than all at once.

The rule has changed before

The current dates come from the Energy Policy Act of 2005, which extended the period from 2007. Before that it ran from April to October. Proposals to make daylight saving permanent surface regularly without passing — see when daylight saving starts and ends.

Guides about Daylight Saving Dates

US time explained When Does Daylight Saving Time Start and End? Daylight saving time follows a fixed rule rather than a fixed date. Here is the rule, why the switch happens at 2:00 a.m. local, and why other countries change on other days. 5 min read

More ustime.now pages

US Time Now The current time in all six US time zones at once, with offsets and dates. Eastern Time The current Eastern time, whether that is EST or EDT right now. Central Time The current Central time, covering the middle third of the country. Mountain Time The current Mountain time — and how Arizona differs from the rest of the zone. Pacific Time The current Pacific time, three hours behind the east coast. Alaska & Hawaii Time The current time in Alaska and Hawaii — the two zones people forget when scheduling.

Frequently asked questions

When do the clocks go forward?
On the second Sunday in March at 2:00 a.m. local time, when clocks jump straight to 3:00 a.m.
When do the clocks go back?
On the first Sunday in November at 2:00 a.m. local time, when clocks return to 1:00 a.m.
Which states skip it?
Hawaii and Arizona, except for the Navajo Nation within Arizona, which does observe it. Most US territories also stay on standard time.
Do all time zones change at the same moment?
No. The switch happens at 2:00 a.m. in each local zone, so it sweeps westward across the country over several hours.