How to use the daylight saving change dates finder
- Pick a place from the list. Each entry is a city that stands for a whole time zone and its daylight saving rules.
- Enter the year, from 1970 to 2100.
- Read how many clock changes happen that year, then the table with the date, the clock reading before and after, the direction and the UTC offsets.
- Copy the result, print it or download the CSV to share with a team or add the dates to a calendar.
Formula
Offset(day) = UTC offset of the place at the start of that day
A change is where Offset(day) differs from Offset(next day)
The minute is found by halving the day until one minute is left
Clock before = UTC moment + old offset; clock after = UTC moment + new offset
The tool does not apply a rule such as "second Sunday of March". It reads the offsets from the time zone database built into your browser, so places whose rules differ or changed are handled correctly.
New York in 2026
The offset in New York is UTC-05:00 in January. It becomes UTC-04:00 at 2:00 AM on Sunday, March 8, 2026, when clocks go forward one hour to 3:00 AM. It returns to UTC-05:00 at 2:00 AM on Sunday, November 1, 2026, when clocks go back to 1:00 AM. That is two changes, which matches a separate check in Python with zoneinfo.
London shifts on Sunday, March 29 (1:00 AM becomes 2:00 AM) and Sunday, October 25, 2026. Sydney goes the other way: clocks go back on Sunday, April 5 (3:00 AM becomes 2:00 AM) and forward on Sunday, October 4. St. John's in Canada moves by an hour but from a half-hour offset, UTC-03:30 to UTC-02:30.
Dates differ from place to place
Daylight saving does not start on the same day everywhere. North America changes in March and November, Europe in late March and late October, and the southern hemisphere in April and September or October. Some places, such as Arizona, India, Japan and Moscow, keep one offset all year, and the page reports that instead of a table. A few places change at midnight, so the clock before can fall on the day before the date shown in a local news story.
To convert a meeting time between two zones on a given date, use the Time Zone Converter. To see the current time in several cities, the World Clock is faster.
Using the dates for planning
The change dates matter for flights, recurring calls, shift schedules, systems that log in local time and anything that runs at 2:00 AM. When clocks go forward, the hour from 2:00 to 3:00 does not exist. When clocks go back, the hour from 1:00 to 2:00 happens twice. Knowing the exact minute helps you avoid scheduling work in either gap.
For a flight that crosses a change, add the flight time to the departure in UTC, as the Flight Arrival Time Calculator does, and then look up the offset that applies on the arrival date.
Assumptions and limits
- The dates come from the time zone database in your browser. Browsers update this data at different times, so an old browser can disagree with a newer one about recent law changes.
- Years after the current one follow the rules known today. A government can change its rules with little notice.
- A city stands for its whole zone. Neighboring places may follow a different rule, so choose the closest match.
- Nothing is sent anywhere. The page reads the offsets locally.
Frequently asked questions
When does daylight saving time start and end in the United States?
Choose a US city and a year to see the exact dates and times. In recent years the change forward has been in March and the change back in November, always on a Sunday at 2:00 AM local time, and the page confirms this for the year you pick.
Why does a place show no clock changes?
It keeps one UTC offset all year. Arizona, India, Japan, China, Moscow and Brazil are examples in the list. The page shows the offset instead of a table.
Why do some changes happen at midnight?
A few places schedule the change at 12:00 AM or 1:00 AM local time. The date shown is the date of the clock before the change, so a change from 12:00 AM to 1:00 AM is listed on the date that starts at 12:00 AM.
Can I trust a date far in the future?
Treat it as the date under today's rules. Future rules can change by law, and your browser data is only as new as the browser. Check a recent source before you rely on a date for travel or a contract.