You said 3 p.m. — but whose 3 p.m.?

Scheduling across cities means a time in one zone is a different hour, and sometimes a different day, elsewhere. Daylight saving makes it worse. Guessing the offset is how meetings land at the wrong hour.

Convert with the zone spelled out

The Timezone Converter takes a date and time in one zone and shows it in another, plus the Unix epoch seconds for an unambiguous, zone-free reference you can store or compare.

Go straight to epoch when needed

If your system works in raw timestamps, the Timestamp Converter turns Unix seconds or milliseconds into a readable date and back. Convert between zones for humans, convert to epoch for machines.

When this matters

Setting a meeting across regions without DST mistakes.
Logging an event time in a single, comparable format.
Explaining to a teammate what "noon UTC" means locally.

Frequently Asked Questions

Why is the result off by one hour?

Almost always daylight saving. Regions change their clocks on different dates, so for a few weeks each year two zones are offset by an amount that differs from the rest of the year. Use the current rules rather than a fixed offset.

What is the safest way to store a time?

Store the instant, not the local reading. An offset-free value such as a Unix timestamp or an ISO string in UTC means the same moment is preserved, and the zone becomes a display decision made at the last step.

Why does the same timestamp show different dates?

Because a single instant falls on different calendar days in different zones. That is not an error, and it is exactly why converting before you agree on a meeting time prevents the classic cross-region scheduling mistake.

Convert a time across world time zones