Previous change
Calculating…
Your clock, decoded
When do the clocks change?
Clock changes follow local rules, not one global calendar. We read the selected timezone’s current rules and look for real changes in its UTC offset.
Next change
Calculating…
A “recent” change means one in the past 72 hours. Dates reflect the timezone data installed in your browser, so governments’ future rule changes may appear after your browser updates.
Forward or back?
The tiny time-travel guide
Forward
The displayed time jumps ahead. A one-hour move means the familiar “lose an hour” shorthand; some places move by only 30 minutes.
Back
The displayed time repeats an interval. You “gain” that amount of clock time, though elapsed time itself carries on normally.
Time, explained
About daylight saving time
Did the clocks change last night?
The answer above checks your chosen IANA timezone. A YES appears for 72 hours after an offset transition, with the direction and exact amount.
What is daylight saving time (DST)?
Daylight saving time is a seasonal convention that moves civil clocks, usually to shift more usable daylight into the evening. The reliable fact this site detects is an actual UTC-offset change; not every historical or political offset change is necessarily DST.
Do I gain or lose an hour?
Forward means you lose the skipped amount of displayed clock time; back means you gain the repeated amount. It is often one hour, but not always—Australia/Lord_Howe commonly changes by 30 minutes.
Does every country change its clocks?
No. Many places, including Japan and most near the equator, do not currently make seasonal clock changes. Some countries contain multiple timezones with different rules.
Why do countries change on different dates?
Clock rules are set by governments and shaped by seasons, latitude, history, and policy. Northern and Southern Hemisphere schedules are therefore different, and rules can change.
What happens where DST is not used?
If no offset transition exists within our three-year search horizon, the page says the timezone does not currently change its clocks. Its local time still advances normally.