US Time Zone Map
Click anywhere on the map to resolve its IANA time zone and see the live local time, UTC offset and daylight-saving status. Six US zone cards tick in real time below.
Click anywhere on the map to resolve its IANA time zone and see the live local time.
Zone lookup runs fully offline against an embedded IANA boundary database — nothing leaves your browser.
US zones — live
Formula: Click coordinates are matched against IANA time-zone boundaries (tz-lookup). Displayed times use the browser's Intl engine, so daylight-saving transitions are handled automatically.
How to use this tool
Click any point on the US map, or press Use my location for GPS.
Read the resolved IANA zone, live clock, UTC offset and DST status.
Compare the six US zone cards ticking live underneath.
What people use this tool for
Click New York → America/New_York, currently UTC-05:00 or UTC-04:00 in DST
Scheduling a call between a client in Chicago and a team in Denver
How it's calculated
Clicked coordinates are matched against IANA time-zone boundaries using an offline database (tz-lookup) entirely in your browser. Displayed times use the browser's Intl engine, so daylight-saving transitions are handled automatically. No location data is sent anywhere.
Related tools and resources
Frequently asked questions
How is the time zone determined?
Your click coordinates are looked up against an offline IANA time-zone boundary database — nothing is sent to a server.
What if I click on the ocean?
Time zones are defined for land areas, so you will get a note asking you to click on land instead.
Does it handle daylight saving time?
Yes. The UTC offset and DST status are computed for the current date using the IANA rules.
Which zones are on the cards?
Eastern, Central, Mountain, Pacific, Alaska and Hawaii-Aleutian — each with a live ticking clock.
Is my GPS location stored?
No. The GPS reading stays in your browser; only the offline zone lookup runs locally.
Why do some state borders not match the zone?
A few states are split between zones (for example parts of Florida, Indiana and Texas). The boundary database follows the real, sometimes zigzagging, lines.
What is an IANA time zone?
The canonical identifier like America/Chicago maintained in the IANA Time Zone Database, used by operating systems worldwide.
Can I use this outside the US?
The map is US-centred but the lookup works for any land point on Earth.