DST 2026: every country's policy and the year's transitions

What changes in 2026

The 2026 daylight-saving picture is mostly a continuation of the 2024 and 2025 trajectory: the same set of countries that have observed DST for decades continues to observe it, the same set that abolished it in the 2014–2022 window continues to skip it, and a small handful of legislative debates remain unresolved.

Three things to track in 2026:

No EU member state has yet abolished DST. The European Parliament voted in March 2019 to end mandatory clock changes by 2021, but the Council of the EU never adopted the proposal and the directive has been stalled since. As of 2026, all 27 member states still observe the last-Sunday-of-March / last-Sunday-of-October switch defined in Directive 2000/84/EC. The post-2019 stalemate is essentially about which version of permanent time to standardize on — Mediterranean countries leaning toward permanent summer time, Northern European countries leaning toward permanent winter time — rather than whether to keep switching.

The U.S. Sunshine Protection Act is again in committee. It passed the Senate in March 2022 by unanimous consent, expired in the House without a floor vote, was reintroduced in the 118th Congress as S.582 and again in the 119th Congress in 2025. Several U.S. states (Florida, California, Oregon, Washington, and others) have passed conditional state-level legislation that would adopt permanent DST if federal law allowed it. The Uniform Time Act currently does not, so the conditional bills are dormant.

Mexico's border strip remains on U.S. dates. Mexico abolished nationwide DST effective October 30, 2022 ^[4]. The northern border strip — a band of municipalities along the U.S. border in Baja California, Sonora, Chihuahua, Coahuila, Nuevo León, and Tamaulipas — was excepted from the abolition and continues to follow U.S. transition dates. This is the only remaining DST-observing region in Mexico in 2026.

If a country changes its DST policy mid-year, the IANA Time Zone Database will issue a `tzdata` patch release within a few weeks, and OS-level tzdata updates will roll out shortly after. Always keep your servers' tzdata current; out-of-date tzdata is the most common silent cause of wrong local-time computations after a policy change.

Spring forward / fall back: every country's 2026 dates

The two transition rules that matter for most of the world:

The U.S. and Canada (DST observers). Spring forward on Sunday, March 8, 2026 at 02:00 local — clocks jump from 01:59:59 to 03:00:00. Fall back on Sunday, November 1, 2026 at 02:00 local — clocks jump from 01:59:59 to 01:00:00. The rule is the second Sunday of March and the first Sunday of November, codified in the U.S. Energy Policy Act of 2005 ^[1].

The European Union and the United Kingdom. Spring forward on Sunday, March 29, 2026 at 01:00 UTC. Fall back on Sunday, October 25, 2026 at 01:00 UTC. The rule is the last Sunday of March and the last Sunday of October. The UK uses the same rule post-Brexit; the rule is encoded in the EU Summer Time Directive and is followed by every member state. Note that EU transitions happen at 01:00 UTC, which is 02:00 in Central European Time and 03:00 in Eastern European Time — so all EU clocks change at the same physical moment, regardless of zone.

Australia (southern states only). Spring forward into AEDT on Sunday, October 4, 2026 at 02:00 local. Fall back on Sunday, April 5, 2026 at 03:00 local — the dates of which I am citing for Sydney and the New South Wales rule, which is shared by Victoria, Tasmania, ACT, and South Australia (with South Australia on a half-hour offset). Western Australia, Queensland, and the Northern Territory do not observe DST.

New Zealand. Spring forward to NZDT on Sunday, September 27, 2026. Fall back on Sunday, April 5, 2026. The rule is the last Sunday of September and the first Sunday of April.

Chile. A complicated case: the country observes DST in most of its territory and not in the Magallanes Region. Spring forward to CLST on the first Saturday of September at 24:00 — which falls on September 5, 2026. Fall back on the first Saturday of April at 24:00 — April 4, 2026.

Paraguay. Spring forward on the first Sunday of October — October 4, 2026. Fall back on the fourth Sunday of March — March 22, 2026.

Mexico (northern border strip only). Follows U.S. dates: March 8 and November 1 in 2026.

Cuba. Spring forward on the second Sunday of March — March 8, 2026. Fall back on the first Sunday of November — November 1, 2026.

The "desync week" produced by the U.S. and EU not transitioning on the same Sunday is real and recurring: October 26 – November 1, 2026, the EU is on standard time but the U.S. is still on DST. For that one week, the gap between New York and London is four hours instead of the usual five. Cross-Atlantic recurring meetings should plan around this — see Meeting across time zones for the practical mitigation.

For the always-current per-country dashboard, the DST tracker and DST pair finder are the live tools. For a converter that respects future transitions, use the time zone converter and pick a future date.

Countries that don't observe DST

The list of permanent-standard-time countries is large and growing. As of 2026, it includes:

Asia: China, India, Japan, South Korea, Singapore, Vietnam, Thailand, Malaysia, Indonesia, Philippines, Pakistan, Bangladesh, Sri Lanka, Nepal, Myanmar, Saudi Arabia, the United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, and Iran (which abolished DST in 2022). Iraq abolished DST in 2008. Israel and Lebanon are notable exceptions that still observe DST.

Africa: Most of the continent is on permanent standard time. Egypt re-introduced DST in 2023 after a nine-year pause; Morocco observes DST except during the month of Ramadan. Tunisia, Libya, and most of West and Sub-Saharan Africa do not observe DST. The Canary Islands, which are politically Spanish, observe DST on the EU schedule.

Americas: Brazil abolished nationwide DST in November 2019 — every state. Argentina abolished it in 2009. Most of Central America does not observe DST. Most of the Caribbean does not observe DST. Russia abolished it in 2014. Belarus, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan, and Mongolia do not observe.

North American holdouts: Hawaii does not observe DST. Most of Arizona does not observe DST, except for the Navajo Nation, which does. Most of Saskatchewan does not observe DST. The Yukon territory in Canada moved to permanent UTC-7 (year-round MST) in March 2020.

Oceania: Within Australia, Queensland, the Northern Territory, and Western Australia do not observe DST. Most of Polynesia and Micronesia does not.

For the per-country detail, see the DST tracker, which lists current status and the next scheduled transition for every country. For a tool that highlights the desync between any two zones across the year, see the DST pair finder.

Why DST is controversial

DST originated as a wartime energy-saving measure in 1916 (Germany and Austria-Hungary, then the UK, then the U.S. in 1918) ^[2]. The idea was to push more daylight into the evening, when electric lighting was used most heavily. Modern studies have repeatedly found that the actual energy savings are small or zero — air conditioning load shifts, heating load shifts, and the net effect is statistical noise.

The case against DST has shifted from energy economics to public health. The American Academy of Sleep Medicine, the European Sleep Research Society, and similar bodies in Australia and Asia have published position statements recommending the abolition of biannual clock changes ^[3], citing increased rates of heart attack, stroke, and motor vehicle collision in the days following each transition. The studies are robust on the short-term harm; the longer-term debate is whether to standardize on permanent winter time (which sleep researchers prefer, because it aligns with solar noon) or permanent summer time (which retail and recreation lobbies prefer, because evening daylight drives commerce).

The case for keeping DST is cultural and economic. Long summer evenings drive evening retail spending, outdoor recreation, and outdoor dining revenue. School children in northern latitudes who walk to school benefit from morning light in winter, which permanent summer time would eliminate. The agricultural lobby, which is often cited as supporting DST, has actually opposed it for most of its history — farmers prefer dawn-aligned schedules.

The legislative deadlock in both the EU and the U.S. is fundamentally about which permanent zone to choose. Polling consistently shows majority support for "abolish the switch" but no majority for either alternative.

How to handle DST in scheduling tools

The single most important rule: store every timestamp in UTC, alongside the IANA zone identifier of the originating zone. Never store a local-time string. Never store a fixed offset. The IANA identifier is the rules program; the UTC instant is the moment; everything else is a rendering decision at the edge.

For application developers:

• Use a date-and-time library that reads from system tzdata (`date-fns-tz`, `Luxon`, `js-joda`, Python's `zoneinfo`). Avoid older libraries that bundle their own outdated rules.
• Update your tzdata at least quarterly. After a country changes its DST policy, the IANA database publishes a patch release within a few weeks; if you don't pull it, you compute wrong local times silently.
• For recurring meetings, store the canonical zone alongside the start time. RFC 5545 supports this through the `TZID` parameter on `DTSTART`. Calendar systems that don't store `TZID` will produce wrong recurrences across DST.
• Test the spring-forward and fall-back boundaries explicitly. The hour 02:00–03:00 on the spring-forward day does not exist. The hour 01:00–02:00 on the fall-back day exists twice. Most date arithmetic bugs hide in these two hours.

For end users, the meeting drift checker shows how a recurring meeting will move through the year's transitions. The time zone converter handles a single moment, DST-aware. The meeting planner handles full recurrence, with overlap rendered across the year.

Looking ahead: legislative trends

The trajectory through the rest of the decade is clear, even if the destinations are not.

Abolition continues. Every country that abolishes DST stays abolished — there are no recent examples of a country reinstating DST after dropping it. (Egypt's 2023 re-introduction was after a regulatory pause, not a deliberate prior abolition.) The list of DST-observing countries has shrunk every decade since 1990.

The U.S. is the most likely next major change. The Sunshine Protection Act has bipartisan support that has held across multiple Congresses. The probable obstacles are not opposition but priority — DST reform is rarely the most pressing legislative item on any given day. If the bill passes, the U.S. would standardize on permanent UTC offset for most regions, with the existing Hawaii and Arizona carve-outs preserved.

The EU is the slowest case. The 2019 vote remains in stalemate. Any future EU action requires a Council position, which requires consensus across 27 member states with different latitudes and different cultural relationships to evening daylight. A serious revival is more likely after a major change at a member-state level (Spain or Germany announcing a national permanent zone, for instance) than from continued European Parliament initiative.

Australia is unlikely to change soon. The split between DST-observing southern states and non-observing northern states has been stable for fifty years; the political cost of unifying is not seen as worth the gain.

Russia and the post-Soviet states are settled. Russia's 2014 decision to standardize on permanent winter time has held. The smaller post-Soviet states have followed individually. None has reintroduced DST.

For the live, country-by-country status, see the DST tracker. For a foundational reference on how time zones, UTC, and DST interact, see the complete guide to time zones. For practical scheduling around the desync weeks, see Meeting across time zones.

Glossary

Spring forward

The springtime daylight-saving transition in which clocks are advanced by one hour, shortening that day to 23 hours and shifting daylight from morning to evening. In the United States and Canada it occurs on the second Sunday of March; in the European Union and the United Kingdom on the last Sunday of March. The skipped hour does not exist in local civil time, which is a frequent source of date-arithmetic bugs.

Fall back

The autumn daylight-saving transition in which clocks are turned back by one hour, lengthening that day to 25 hours and reverting from summer time to standard time. In the United States and Canada it occurs on the first Sunday of November; in the European Union and the United Kingdom on the last Sunday of October. The repeated hour exists twice in local civil time, another frequent source of bugs.

Sunshine Protection Act

A proposed United States federal law that would make daylight saving time permanent year-round, eliminating the autumn transition back to standard time. It passed the Senate by unanimous consent in March 2022 but expired in the House without a floor vote. It has been reintroduced in subsequent Congresses and has not become law as of this writing.

EU Summer Time Directive

European Union Directive 2000/84/EC, which harmonises daylight-saving rules across all member states by mandating a switch to summer time on the last Sunday of March and a switch back on the last Sunday of October, with all transitions occurring at 01:00 UTC. The European Parliament voted in 2019 to end mandatory clock changes, but the Council of the EU has not adopted the proposal, so the directive remains in force.

tzdata

The release artefact of the IANA Time Zone Database, identified by year-and-letter labels such as `2025a`, `2025b`, `2025c`. A new release is published whenever a country changes its time-zone or daylight-saving rules, typically several times a year. Operating systems, runtimes, and applications must update their bundled `tzdata` to compute correct local times after a policy change.

Standard time

The civil time of a region during the part of the year when daylight saving is not in effect. In the United States, standard time runs from early November to early March; in the European Union, from late October to late March. Some regions, including most of Asia, Africa, and the equatorial Americas, use standard time year-round.

Permanent standard time

A policy under which a region remains on standard time throughout the year and never advances clocks for daylight saving. Adopted by Russia in 2014, by Mexico (outside the northern border strip) in 2022, by Brazil in 2019, and by every country that has abolished daylight saving since the early 2000s. Sleep-medicine bodies generally favour permanent standard time over permanent summer time because it aligns better with solar noon.

Desync week

A short window each spring and autumn during which two regions that both observe daylight saving have transitioned on different Sundays, producing a temporary one-hour shift in the offset between them. The most consequential example is the U.S./EU desync, which lasts about a week each March and a week each late October to early November and changes the New York-to-London gap from five hours to four.