Does it handle daylight saving?

Yes. The conversion uses each zone's rules for today, so a 9am call from New York lands at 2pm in London in summer and 1pm after the clocks change.

Why city names instead of EST or PST?

Abbreviations are ambiguous: CST is Chicago, China, and Cuba. A place like America/Chicago always means one set of rules. The abbreviation shows next to the answer.

What does +1 day mean?

The converted time falls on the next calendar day. An evening call from California is already tomorrow morning in Tokyo.

Can I do this from code?

Yes. GET /timezone/{timezone} answers any IANA zone with its current offset, DST state, and next change. One pooled request per call.

FREE TOOL

Time zone converter

A time and two zones in, the local time out. Today's offsets, daylight saving included.

2:00 PM

in London, when it is 09:00 in New York. Today's offsets, daylight saving included.

Free, no signup. Starts from your own zone.

THE API UNDERNEATH

GET /timezone/America/New_York

The zone facts on this page, abbreviation and current offset, come from that call. It also answers DST state and the next change for any IANA zone. Same endpoint on every plan, one pooled request per lookup.

Timezone API What time zone am I in?

QUESTIONS

Does it handle daylight saving?: Yes. The conversion uses each zone's rules for today, so a 9am call from New York lands at 2pm in London in summer and 1pm after the clocks change.
Why city names instead of EST or PST?: Abbreviations are ambiguous: CST is Chicago, China, and Cuba. A place like America/Chicago always means one set of rules. The abbreviation shows next to the answer.
What does +1 day mean?: The converted time falls on the next calendar day. An evening call from California is already tomorrow morning in Tokyo.
Can I do this from code?: Yes. GET /timezone/{timezone} answers any IANA zone with its current offset, DST state, and next change. One pooled request per call.