What time zone am I in?
Your device already knows, and it knows it as an IANA identifier rather than an abbreviation — which is the answer you actually want if anyone is going to convert it.
The short answer
Your browser reports your zone as —, currently —.
That Area/City form is the identifier that matters. An
abbreviation like “EST” or “CST” is ambiguous and only correct part of the
year; the zone name is correct always.
Reading the answer above
The value shown is your IANA time zone identifier, taken from your browser's own settings — nothing is sent anywhere to produce it.
It looks like America/New_York, Europe/London or Asia/Kolkata. The city in
it is a label for a set of rules, not a claim about where you are. Everyone
in the US eastern zone is America/New_York whether they live in Miami or
Toronto.
Why the identifier beats the abbreviation
Three reasons, all practical:
Abbreviations are ambiguous. CST is US Central Standard Time, China Standard Time and Cuba Standard Time — the first and second are fourteen hours apart. IST covers India, Ireland and Israel.
Abbreviations change with the season. New York is EST in winter and EDT in summer. Writing "EST" in July describes a time that is not in effect.
Identifiers encode the rules. America/Phoenix knows Arizona does not observe
daylight saving. Asia/Kolkata knows India is UTC+5:30 and never changes. An
offset written by hand knows nothing.
Finding it on your devices
| Device | Where |
|---|---|
| iPhone / iPad | Settings → General → Date & Time |
| Mac | System Settings → General → Date & Time |
| Windows | Settings → Time & language → Date & time |
| Android | Settings → System → Date & time |
| Any browser | The value shown at the top of this page |
Most of these display a city or region name rather than the raw identifier. That is fine — the city is the useful part.
How to tell someone else your time zone
In rough order of how well it survives:
- Your city. "I'm in Prague." Unambiguous, converts correctly on any date, and requires no jargon.
- The IANA identifier.
Europe/Prague. Best for anything technical. - A UTC offset with a date. "UTC+2 at the moment." Adequate for right now, wrong six months later.
- An abbreviation. Avoid. Ambiguous internationally, and wrong for part of the year.
If the answer looks wrong
A device showing the wrong zone is usually set to a manual zone rather than an automatic one, or has been left on a zone from a previous trip. On phones, turning automatic zone detection back on fixes it — and matters more than it seems, because your calendar resolves every event against it.
If your zone recently changed rules — several countries have abolished daylight saving in the last few years — a device with an out-of-date time zone database can be an hour out until it updates.
Related: Time zone abbreviations decoded · The tz database
Timezone: World Clock Widget
A world clock, converter and live day/night map for iPhone — 325 cities, offline, no account.
Figures on this page are computed from the IANA time zone database. Last generated 2026-08-18.