There’s that moment each spring when you glance at the microwave and the clock on the oven, and they’re suddenly an hour apart, and if you’re wondering exactly when that happens in 2025 — and whether you’re losing or gaining sleep — you’re not alone. This guide gives the concrete US and Ireland start and end dates for both 2025 and 2026, alongside a look at the British Standard Time experiment that still fuels the permanent-DST debate.

4 related posts

US DST start 2025: March 9, 2025, 2:00 a.m. ·
US DST end 2025: November 2, 2025, 2:00 a.m. ·
Ireland DST start 2025: March 30, 2025, 1:00 a.m. ·
Ireland DST end 2025: October 26, 2025, 2:00 a.m. ·
US DST start 2026: March 8, 2026, 2:00 a.m. ·
Ireland DST start 2026: March 29, 2026, 1:00 a.m.

Quick snapshot

1Confirmed facts
2What’s unclear
3Timeline signal
4What’s next
  • Next US clock change: fall back on November 2, 2025.
  • Next Ireland clock change: fall back on October 26, 2025.
  • Then spring forward again: US on March 8, 2026; Ireland on March 29, 2026.

Six key dates, one pattern: the US and Ireland are about a month out of sync when springing forward, but both fall back in early-to-late autumn.

Event Date
US 2025 DST start March 9, 2025
US 2025 DST end November 2, 2025
Ireland 2025 DST start March 30, 2025
Ireland 2025 DST end October 26, 2025
US 2026 DST start March 8, 2026
Ireland 2026 DST start March 29, 2026
The trade-off

US travellers booking transatlantic calls in March will face a 5-week window where the time difference shrinks by one hour — and that hour reappears in autumn. Plan calendar invites accordingly.

When does daylight saving start in the USA in 2025?

What date do the clocks go forward in the USA?

The catch: Arizona (except the Navajo Nation), Hawaii, and U.S. territories do not observe DST, so those residents keep their standard time year-round.

When do we turn clocks ahead in 2026 in the USA?

  • In 2026, U.S. clocks spring forward on Sunday, March 8, at 2:00 a.m. (NIST).
  • They fall back on Sunday, November 1, 2026 (timeanddate.com).

The pattern: U.S. dates shift by exactly one day each year unless leap-year effects nudge them. In 2026, both dates move one day earlier than 2025.

When do the clocks change in Ireland?

Does Ireland go on daylight saving time?

  • Yes, Ireland observes daylight saving time, switching between Greenwich Mean Time (GMT) in winter and Irish Standard Time (IST) in summer (timeanddate.com, a global time reference).
  • Clocks go forward at 1:00 a.m. on the last Sunday in March and back at 2:00 a.m. on the last Sunday in October (Citizens Information, Ireland’s official government information service).
  • In 2025, the forward change happens on March 30 (1:00 a.m. becomes 2:00 a.m.) and the back change on October 26 (2:00 a.m. becomes 1:00 a.m.).

When is the time change in Ireland in 2026?

  • In 2026, Ireland clocks go forward on March 29 at 1:00 a.m. (Citizens Information).
  • They go back on October 25 at 2:00 a.m. (Citizens Information).

Why this matters: Ireland and the UK share the same DST schedule (last Sundays in March and October), but the EU as a whole has discussed scrapping seasonal clock changes—a decision that remains stalled since 2018.

Are we losing or gaining an hour?

Do we get an extra hour in bed?

  • When DST starts (spring forward), clocks move ahead one hour — you lose an hour of sleep that night.
  • When DST ends (fall back), clocks move back one hour — you gain an hour.
  • A reader asking “Do clocks go forward tonight?” must check the date: in the US 2025, the forward change already happened on March 9; in Ireland, it’s March 30.

The trade-off: the extra hour in bed only comes at the fall-back change. For shift workers and parents of early risers, that single hour can feel like a full night’s rest.

Is the USA the only country to do daylight savings?

When does daylight saving time end permanently?

  • No, the US is not alone. Many countries in Europe, North America, and parts of South America, Africa, Asia, and Oceania observe or have observed DST (Live Science, a popular science publication).
  • There is no permanent US federal DST yet: the Sunshine Protection Act has been proposed multiple times but not enacted, so clock changes continue (ABC News).
  • EU member states were given the option to choose permanent summer time, but many have not reached a consensus; the last missed deadline was 2021.

Why did the clocks not go back in 1968?

  • In 1968, the UK and Ireland began the British Standard Time experiment, keeping clocks on summer time (GMT+1) through the winter. Clocks did not go back in autumn 1968.
  • The experiment lasted until 1971, when residents in northern parts of the UK complained about dark winter mornings, and the countries returned to seasonal DST.

The implication: the 1968 trial is often cited by both sides of the permanent-DST debate. Proponents point to fewer road accidents in the evenings; opponents cite the dark mornings that disrupted school runs and farm routines.

Do the clocks change in America like they do in the UK?

When does daylight saving start and end in 2026?

Both the US and the UK (and Ireland) follow a spring-forward/fall-back pattern, but the dates differ by rule:

Parameter USA Ireland / UK
Start rule Second Sunday in March Last Sunday in March
End rule First Sunday in November Last Sunday in October
2025 dates March 9 – November 2 March 30 – October 26
2026 dates March 8 – November 1 March 29 – October 25

The pattern: the US DST period is about 34 days longer than Ireland’s. That means US evenings stay lighter later into autumn, while Ireland’s clocks change earlier.

Bottom line: If you manage teams across the Atlantic, the 2025 US-Ireland DST gap means a 5-week window where the time difference shifts by one hour — and then shifts back three weeks later for Ireland. For travellers, double-check your calendar invites in March and October. For permanent-DST advocates, the 1968 British Standard Time trial is the nearest real-world evidence we have.

Timeline: key DST milestones

  • March 9, 2025 – US DST starts at 2:00 a.m. local time (timeanddate.com).
  • March 30, 2025 – Ireland DST starts at 1:00 a.m. local time (Citizens Information).
  • October 26, 2025 – Ireland DST ends at 2:00 a.m. local time (Citizens Information).
  • November 2, 2025 – US DST ends at 2:00 a.m. local time (ABC News).
  • March 8, 2026 – US DST starts at 2:00 a.m. local time (NIST).
  • March 29, 2026 – Ireland DST starts at 1:00 a.m. local time (Citizens Information).

What we know and what remains uncertain

Confirmed facts

  • US DST starts on the second Sunday in March and ends on the first Sunday in November (NIST).
  • Ireland DST starts on the last Sunday in March and ends on the last Sunday in October (Citizens Information).
  • In 2025, the US starts on March 9 and Ireland starts on March 30.
  • In 2026, the US starts on March 8 and Ireland starts on March 29.

What’s unclear

  • Whether US DST will end permanently remains unresolved because federal law has not changed (ABC News).
  • EU discussions about ending seasonal clock changes have not produced a binding final date (RTÉ).
  • Which hemisphere a reader is in determines whether the next clock change is losing or gaining an hour, because DST timing is reversed in the Southern Hemisphere.

Perspectives from official sources

“Clocks go forward by one hour at 1:00 a.m. on the last Sunday of March.”

– Citizens Information, Ireland’s official government information service

“In the United States, daylight saving time begins at 2:00 a.m. on the second Sunday in March.”

– NIST, the U.S. official time authority

“When the clocks fall back on November 2, that’s when you get an extra hour of sleep.”

– ABC News, a major editorial outlet

For anyone planning travel between the US and Ireland in 2025, the one-hour shift difference is a concrete disruption: pack your schedule twice, or rely on a dual-time zone calendar. The 1968 British Standard Time trial suggests that permanent DST is workable — but only if dark winter mornings are acceptable.

Related reading: Daylight Savings 2026 New Zealand: Dates, Time Change, and FAQ and When Does Spring Start in NZ? 2026 Dates & Seasons.

Additional sources

irelandreport.net, selectra.ie, en.wikipedia.org, timeanddate.com, dublinlive.ie, english.elpais.com

Don't miss these

Frequently asked questions

What is daylight saving time?

Daylight saving time (DST) is the practice of setting clocks forward one hour from standard time during the warmer months to extend evening daylight. The US and Ireland both observe DST, though on different schedules.

Why was daylight saving time created?

DST was first widely implemented during World War I to save fuel. Today it is used in many countries, though critics argue the energy savings are minimal and the health costs are real.

Do all U.S. states observe daylight saving time?

No. Hawaii, most of Arizona (except the Navajo Nation), and U.S. territories (Puerto Rico, Guam, etc.) do not observe DST. They stay on standard time year-round.

Do all countries change their clocks at the same time?

No. Dates vary by country. For example, the US starts DST in March, while European countries start in late March. The Southern Hemisphere reverses: they spring forward in September/October.

When do clocks go forward in Europe in 2025?

European countries that observe DST (including Ireland and the UK) spring forward on the last Sunday in March — March 30, 2025. They fall back on the last Sunday in October — October 26, 2025.

How do I remember whether clocks go forward or back?

A common mnemonic: “Spring forward, fall back.” In spring (March/April), clocks move ahead one hour; in autumn (September/October/November), they move back one hour.