Clock changes

Daylight saving time: when the clocks change

Each date below is calculated from the same time-zone rules your phone uses. About 122 of the 171 countries listed on TrueHour do not change their clocks at all.

United States and Canada

Sunday, March 14, 2027

Clocks go forward one hour at 2:00 AM local time. The rule: second Sunday in March to first Sunday in November. Hawaii, most of Arizona, Puerto Rico and Saskatchewan do not change.

131 days away

European Union and United Kingdom

Sunday, March 28, 2027

Clocks go forward one hour at 01:00 UTC everywhere at once — 1:00 AM in London, 2:00 AM in Paris, 3:00 AM in Athens. The rule: last Sunday in March to last Sunday in October.

Southeastern Australia

Sunday, April 4, 2027

Clocks go back one hour in New South Wales, Victoria, the ACT, Tasmania and South Australia. Queensland, the Northern Territory and Western Australia do not change. The rule: first Sunday in October to first Sunday in April.

All upcoming clock changes

Date (UTC)	Change	Where
Sun, Mar 14, 2027	Forward 1 hour UTC−5 → UTC−4	Cuba Havana, Cuba
Sun, Mar 14, 2027	Forward 1 hour UTC−4 → UTC−3	Canada Halifax, Canada
Sun, Mar 14, 2027	Forward 1 hour UTC−5 → UTC−4	United States, Canada, Haiti, Bahamas New York City, New York, Toronto, Canada, Montréal, Canada, Philadelphia, Pennsylvania, Port-au-Prince, Haiti, Ottawa, Canada, Jacksonville, Florida, Columbus, Ohio
Sun, Mar 14, 2027	Forward 1 hour UTC−6 → UTC−5	United States Chicago, Illinois, Houston, Texas, San Antonio, Texas, Dallas, Texas, Fort Worth, Texas, Austin, Texas, Nashville, Tennessee, Oklahoma City, Oklahoma
Sun, Mar 14, 2027	Forward 1 hour UTC−7 → UTC−6	Mexico, United States Ciudad Juárez, Mexico, Denver, Colorado, El Paso, Texas, Albuquerque, New Mexico, Colorado Springs, Colorado, Aurora, Colorado, Boise, Idaho, Salt Lake City, Utah
Sun, Mar 14, 2027	Forward 1 hour UTC−8 → UTC−7	United States, Mexico Los Angeles, California, Tijuana, Mexico, San Diego, California, Mexicali, Mexico, San Jose, California, San Francisco, California, Seattle, Washington, Portland, Oregon
Sun, Mar 14, 2027	Forward 1 hour UTC−9 → UTC−8	United States Anchorage, Alaska
Fri, Mar 26, 2027	Forward 1 hour UTC+2 → UTC+3	Israel Jerusalem, Israel
Sat, Mar 27, 2027	Forward 1 hour UTC+2 → UTC+3	Palestinian Territories Gaza, Palestinian Territories
Sat, Mar 27, 2027	Forward 1 hour UTC+2 → UTC+3	Lebanon Beirut, Lebanon
Sun, Mar 28, 2027	Forward 1 hour UTC+0 → UTC+1	United Kingdom, Germany, Spain, Ukraine, Italy, France and 30 more London, United Kingdom, Berlin, Germany, Madrid, Spain, Kyiv, Ukraine, Rome, Italy, Paris, France, Hamburg, Germany, Bucharest, Romania
Sat, Apr 3, 2027	Back 1 hour UTC+13 → UTC+12	New Zealand Auckland, New Zealand, Christchurch, New Zealand, Wellington, New Zealand, Manukau City, New Zealand, Hamilton, New Zealand, Tauranga, New Zealand, Dunedin, New Zealand, Lower Hutt, New Zealand
Sat, Apr 3, 2027	Back 1 hour UTC+11 → UTC+10	Australia Sydney, Australia, Melbourne, Australia, Newcastle, Australia, Canberra, Australia, Central Coast, Australia, Geelong, Australia, Wollongong, Australia, Hobart, Australia
Sat, Apr 3, 2027	Back 1 hour UTC+10:30 → UTC+9:30	Australia Adelaide, Australia
Sun, Apr 4, 2027	Back 1 hour UTC−3 → UTC−4	Chile Santiago, Chile
Thu, Apr 29, 2027	Forward 1 hour UTC+2 → UTC+3	Egypt Cairo, Egypt, Alexandria, Egypt, Giza, Egypt, Shubrā al Khaymah, Egypt
Sun, Sep 5, 2027	Forward 1 hour UTC−4 → UTC−3	Chile Santiago, Chile
Sat, Sep 25, 2027	Forward 1 hour UTC+12 → UTC+13	New Zealand Auckland, New Zealand, Christchurch, New Zealand, Wellington, New Zealand, Manukau City, New Zealand, Hamilton, New Zealand, Tauranga, New Zealand, Dunedin, New Zealand, Lower Hutt, New Zealand
Sat, Oct 2, 2027	Forward 1 hour UTC+10 → UTC+11	Australia Sydney, Australia, Melbourne, Australia, Newcastle, Australia, Canberra, Australia, Central Coast, Australia, Geelong, Australia, Wollongong, Australia, Hobart, Australia
Sat, Oct 2, 2027	Forward 1 hour UTC+9:30 → UTC+10:30	Australia Adelaide, Australia
Thu, Oct 28, 2027	Back 1 hour UTC+3 → UTC+2	Egypt Cairo, Egypt, Alexandria, Egypt, Giza, Egypt, Shubrā al Khaymah, Egypt
Fri, Oct 29, 2027	Back 1 hour UTC+3 → UTC+2	Palestinian Territories Gaza, Palestinian Territories
Sat, Oct 30, 2027	Back 1 hour UTC+3 → UTC+2	Lebanon Beirut, Lebanon
Sat, Oct 30, 2027	Back 1 hour UTC+3 → UTC+2	Israel Jerusalem, Israel
Sun, Oct 31, 2027	Back 1 hour UTC+1 → UTC+0	United Kingdom, Germany, Spain, Ukraine, Italy, France and 30 more London, United Kingdom, Berlin, Germany, Madrid, Spain, Kyiv, Ukraine, Rome, Italy, Paris, France, Hamburg, Germany, Bucharest, Romania
Sun, Nov 7, 2027	Back 1 hour UTC−4 → UTC−5	Cuba, Canada Havana, Cuba, Halifax, Canada
Sun, Nov 7, 2027	Back 1 hour UTC−4 → UTC−5	United States, Canada, Haiti, Bahamas New York City, New York, Toronto, Canada, Montréal, Canada, Philadelphia, Pennsylvania, Port-au-Prince, Haiti, Ottawa, Canada, Jacksonville, Florida, Columbus, Ohio
Sun, Nov 7, 2027	Back 1 hour UTC−5 → UTC−6	United States Chicago, Illinois, Houston, Texas, San Antonio, Texas, Dallas, Texas, Fort Worth, Texas, Austin, Texas, Nashville, Tennessee, Oklahoma City, Oklahoma
Sun, Nov 7, 2027	Back 1 hour UTC−6 → UTC−7	Mexico, United States Ciudad Juárez, Mexico, Denver, Colorado, El Paso, Texas, Albuquerque, New Mexico, Colorado Springs, Colorado, Aurora, Colorado, Boise, Idaho, Salt Lake City, Utah
Sun, Nov 7, 2027	Back 1 hour UTC−7 → UTC−8	United States, Mexico Los Angeles, California, Tijuana, Mexico, San Diego, California, Mexicali, Mexico, San Jose, California, San Francisco, California, Seattle, Washington, Portland, Oregon
Sun, Nov 7, 2027	Back 1 hour UTC−8 → UTC−9	United States Anchorage, Alaska

Times are the instant of the change. A row disappears once its date has passed.

How daylight saving time works

In spring, clocks move forward one hour, so the local hour from 2:00 to 3:00 AM (in the US) does not happen that day and the day has 23 hours. In autumn, clocks move back, the hour from 1:00 to 2:00 AM happens twice, and the day has 25 hours. Anything measured in local clock time across those nights — a night shift, a timer set by the wall clock, a meeting series between two countries — can be off by an hour.

Countries do not change on the same dates. The United States changes two to three weeks before Europe in March and one week after Europe in autumn, so for a few weeks a year New York is four hours behind London instead of five. Southern Hemisphere countries change in the opposite direction, so the difference between Sydney and London moves by two hours across the year.

The most recent US change was on November 1, 2026. Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−5 → UTC−4).

For a shift or interval that crosses a change, use the hours calculator in dated mode. To schedule across countries, the meeting planner checks each date’s actual offsets.