Daylight Saving Time 2027 — When Do Clocks Change?
Daylight Saving Time (DST) in 2027 follows the standard US schedule — clocks spring forward one hour in spring and fall back one hour in autumn. When do clocks change in 2027? In the US: spring forward March 14, 2027 and fall back November 7, 2027. Below are the exact DST dates for the United States, United Kingdom, Europe, Australia, Canada, and New Zealand.
What Is Daylight Saving Time?
Daylight Saving Time (DST) is the practice of advancing clocks by one hour during warmer months so that evening daylight lasts longer. In spring, clocks "spring forward" — you lose one hour of sleep but gain an extra hour of daylight in the evening. In autumn, clocks "fall back" — you gain one hour of sleep and return to standard time.
The United States has observed Daylight Saving Time since the Uniform Time Act of 1966. Today, DST is observed by approximately 70 countries worldwide, though the exact dates differ by region. Countries near the equator generally do not observe DST because their daylight hours are consistent year-round.
DST directly affects time zone offsets. For example, US Eastern Time moves from EST (UTC-5) to EDT (UTC-4) during summer — meaning any calculation between US Eastern Time and India Standard Time (IST) changes by one hour depending on whether DST is in effect. Use our Time Zone Converter to automatically account for DST in any conversion.
📊 Daylight Saving Time is observed by approximately 70 countries, covering about 40% of the world's population — but over 60% of countries do not change their clocks at all. — TimeAndDate DST Statistics
2027 DST Dates — United States
| Event | Date | Day | Clock Change |
|---|---|---|---|
| Spring Forward | March 14, 2027 | Sunday | 2:00 AM → 3:00 AM (lose 1 hour) |
| Fall Back (DST ends) | November 7, 2027 | Sunday | 2:00 AM → 1:00 AM (gain 1 hour) |
Clocks move forward at 2:00 AM → 3:00 AM (spring) and back at 2:00 AM → 1:00 AM (fall)
Which US States Do NOT Observe DST in 2027?
Most US states observe Daylight Saving Time, but two states permanently stay on standard time year-round. If you are scheduling calls or meetings with people in these states, their UTC offset does not change throughout 2027.
Note: US territories including Puerto Rico, US Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands also do not observe DST.
2027 DST Dates — International
| Country / Region | Spring Forward | Fall Back |
|---|---|---|
| United States | March 14, 2027 | November 7, 2027 |
| Canada (most provinces) | March 14, 2027 | November 7, 2027 |
| United Kingdom | March 28, 2027 | October 31, 2027 |
| European Union | March 28, 2027 | October 31, 2027 |
| Australia (NSW/VIC/ACT/TAS) | October 3, 2027 | April 4, 2027 |
| New Zealand | September 26, 2027 | April 4, 2027 |
Important: Australia's DST runs on a Southern Hemisphere summer schedule — their clocks spring forward in October and fall back in April, the opposite of the Northern Hemisphere.
Countries That Do NOT Observe DST in 2027:
How DST Affects UTC Offsets in 2027
When Daylight Saving Time is active, every US timezone shifts by +1 hour relative to UTC. This means the time difference between US cities and countries that don't observe DST (like India, Japan, China) changes by 1 hour twice a year. Use the table below to find the correct UTC offset for any timezone during standard vs. daylight time.
| Timezone | Standard Time (Winter) | Daylight Time (Summer) |
|---|---|---|
| US Eastern (ET) | EST — UTC-5 | EDT — UTC-4 |
| US Central (CT) | CST — UTC-6 | CDT — UTC-5 |
| US Mountain (MT) | MST — UTC-7 | MDT — UTC-6 |
| US Pacific (PT) | PST — UTC-8 | PDT — UTC-7 |
| UK | GMT — UTC+0 | BST — UTC+1 |
| Central Europe | CET — UTC+1 | CEST — UTC+2 |
Frequently Asked Questions — DST 2027
When does daylight saving time start in 2027?
In the United States, Daylight Saving Time 2027 begins on March 14, 2027 at 2:00 AM. Clocks spring forward 1 hour to 3:00 AM. This marks the start of EDT, PDT, CDT, and MDT.
When do clocks fall back in 2027?
US clocks fall back on November 7, 2027 at 2:00 AM — back to 1:00 AM, returning to standard time (EST, PST, CST, MST). You gain 1 hour of sleep.
Does Arizona observe daylight saving time in 2027?
No. Arizona stays on Mountain Standard Time (MST, UTC-7) year-round and does not observe DST. The only exception is the Navajo Nation within Arizona, which does observe DST.
When does the UK change clocks in 2027?
The UK clocks go forward on March 28, 2027 (GMT → BST, UTC+1) and fall back on October 31, 2027 (BST → GMT). Note that the UK changes on different dates than the US.
Does India observe daylight saving time?
No. India uses India Standard Time (IST, UTC+5:30) year-round and does not observe Daylight Saving Time. The UTC offset stays the same throughout 2027.
Related Tools
DST dates for other years: