How to Use the DST Transition Calculator
Scheduling a call with a colleague overseas or planning a trip abroad gets tricky when Daylight Saving Time shifts the time difference by an hour — and it doesn't happen on the same date everywhere. Choose a reference date and a region, and this calculator instantly tells you when the next transition happens and which direction the clocks move.
The United States springs forward on the second Sunday of March and falls back on the first Sunday of November. Europe starts on the last Sunday of March and ends on the last Sunday of October. Australia is in the Southern Hemisphere, so its seasons run opposite — it starts DST on the first Sunday of October (its spring) and ends on the first Sunday of April (its autumn).
Around a transition date, a meeting booked at "the same time as always" can quietly shift by an hour in the other region even if nothing on your calendar changed. If you have an upcoming trip or a recurring call with an overseas team, use this calculator to check when the next transition lands relative to your reference date so you can update your schedule in advance.
Frequently Asked Questions
Almost all US states follow the standard federal DST schedule, but Hawaii and most of Arizona do not observe it and stay on standard time year-round. If you're coordinating with those states, double-check locally.
Australia is in the Southern Hemisphere, so its seasons are reversed relative to the US and Europe. Instead of starting DST in March like the Northern Hemisphere, Australia starts it in October (its spring) and ends it in April (its autumn).