Time Zone Finder – What Time Zone Am I In?
A few years ago, pure curiosity sent me down a rabbit hole after my calls with family abroad kept landing in the middle of the night, because I never knew which time zone they were actually in. A free tool like this one, with no sign-up, lets you hit Use location or click the world map and see your current local time right away. People assume a ZIP code like 90210 settles everything, but a US state can straddle two zones, and a city like Miami can sit on a different UTC offset than you’d expect depending on the season. That is why DST status matters as much as the name of the zone itself.
Developers lean on lookups like this for cron jobs, deployments, and timestamps sitting in databases, while everyone else uses them for meetings, travel, and trip planning. Even Hawaii, which skips daylight saving, trips up anyone scheduling across a worldwide team. A side-by-side comparison of 8 major world cities, shown on live clocks, makes the gap obvious in one glance, and you can search for whatever local time you need. After years of juggling schedules across continents, I never send an invite without checking the time zone first, and when I travel, I also look up what is my elevation.
Local time
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Time zone details
Right now in major cities
What time zone am I in?
Tap Use location and the tool reads your device's GPS position, then finds the time zone that covers those coordinates. You get the IANA name (for example America/New_York), the full name (Eastern Standard Time), the UTC offset, the live local time, and whether daylight saving time is active right now.
If you don't want to share your location, you can search for a place or click the map instead.
Does it work worldwide?
Yes. You can search any city, US state or US ZIP code, paste coordinates, or click any point on the map.
The tool covers time zones with unusual offsets too, such as Asia/Kathmandu (UTC+5:45) and Pacific/Chatham (UTC+12:45). You can also compare the selected place with eight major cities at the same moment.
How accurate is the lookup?
The time zone comes from the IANA database, matched to your coordinates with the tz-lookup library.
Local time and daylight saving are calculated in your browser from your device clock, so results right on a border may occasionally be off.
Is the tool free?
Yes. There is no sign-up and no API key. The time zone lookup runs in your browser.
Place search, ZIP lookup and the map use free services built on OpenStreetMap, so very heavy use may be slowed down by their limits.
What Is a Time Zone / What Time Zone Am I In?
A time zone is a region of Earth that observes the same standard time. It is easy to imagine the world as 24 zones, each one hour wide and 15° of longitude across. In reality, political borders, half-hour offsets (India, Newfoundland), quarter-hour offsets (Nepal) and country-specific daylight saving rules all create exceptions. That is why a place’s time zone can’t be guessed from its longitude alone, and why a lookup tool is useful.
To find out what time zone you are in, tap the Use location button at the top of the tool. It reads your GPS coordinates, matches them to a time zone, and shows the IANA name (such as America/New_York), the human-readable name (Eastern Standard Time, EST), the UTC offset, the live local time, and whether daylight saving is in effect. If you would rather not share your location, you can search for a place, paste coordinates or click any point on the map to get the correct zone for it. The tool works worldwide, including unusual zones such as Asia/Kathmandu at UTC+5:45.
People look up time zones for meetings, travel, calls with family abroad, planning trips, scheduling jobs and deployments, and making sense of database timestamps. Some simply want to satisfy their curiosity. Whatever your reason, the tool gives you the zone, the live local time, the UTC offset and the daylight saving status in one place. It also lets you compare the selected place with eight major world cities side by side.
How to Find Your Time Zone
- Pick a location. Tap Use location to detect where you are. You can also click anywhere on the world map, search for a city, US state or ZIP code (for example Miami, Hawaii or 90210), or paste coordinates like 40.7128, -74.0060.
- Check the local time. The map shows a pin on your chosen place. Below it, the result panel shows the live local time, the date, the place name, and the time zone’s IANA name (for example America/New_York) with its UTC offset.
- Read the time zone details. The detail cards show the full time zone name, the UTC offset, whether daylight saving time is currently in effect, how far the place is ahead of or behind your own device’s time, and its solar offset.
- Compare with major cities. The city cards show the current time in New York, Los Angeles, London, Paris, Dubai, Tokyo, Sydney and Honolulu. Each card shows how many hours it differs from the place you selected, so you can plan calls and meetings.
- Check another place or start over. Search, click the map or paste new coordinates at any time and everything updates. Press Clear to go back to the default view.
Major world time zones
This table lists common time zones around the world with their IANA name, UTC offset and daylight saving status, sorted from west to east. Where two offsets are shown, such as UTC−5 / −4, the first is standard time and the second is daylight saving time. The months show roughly when daylight saving applies, and countries sometimes change their rules, so use the tool above to see the exact offset for any place right now. A few places use unusual offsets, such as India at UTC+5:30, Nepal at UTC+5:45 and the Chatham Islands at UTC+12:45.
| City | IANA name | UTC offset | Daylight saving |
|---|---|---|---|
| Pago Pago, American Samoa | Pacific/Pago_Pago | UTC−11 | No |
| Honolulu, Hawaii | Pacific/Honolulu | UTC−10 | No |
| Anchorage, USA | America/Anchorage | UTC−9 / −8 | Yes (Mar–Nov) |
| Los Angeles, USA | America/Los_Angeles | UTC−8 / −7 | Yes (Mar–Nov) |
| Denver, USA | America/Denver | UTC−7 / −6 | Yes (Mar–Nov) |
| Phoenix, USA | America/Phoenix | UTC−7 | No |
| Chicago, USA | America/Chicago | UTC−6 / −5 | Yes (Mar–Nov) |
| Mexico City, Mexico | America/Mexico_City | UTC−6 | No |
| New York, USA | America/New_York | UTC−5 / −4 | Yes (Mar–Nov) |
| St. John's, Canada | America/St_Johns | UTC−3:30 / −2:30 | Yes (Mar–Nov) |
| São Paulo, Brazil | America/Sao_Paulo | UTC−3 | No |
| Reykjavik, Iceland | Atlantic/Reykjavik | UTC+0 | No |
| London, UK | Europe/London | UTC+0 / +1 | Yes (Mar–Oct) |
| Paris, France | Europe/Paris | UTC+1 / +2 | Yes (Mar–Oct) |
| Lagos, Nigeria | Africa/Lagos | UTC+1 | No |
| Cairo, Egypt | Africa/Cairo | UTC+2 / +3 | Yes (Apr–Oct) |
| Johannesburg, South Africa | Africa/Johannesburg | UTC+2 | No |
| Istanbul, Turkey | Europe/Istanbul | UTC+3 | No |
| Moscow, Russia | Europe/Moscow | UTC+3 | No |
| Tehran, Iran | Asia/Tehran | UTC+3:30 | No |
| Dubai, UAE | Asia/Dubai | UTC+4 | No |
| Mumbai, India | Asia/Kolkata | UTC+5:30 | No |
| Kathmandu, Nepal | Asia/Kathmandu | UTC+5:45 | No |
| Dhaka, Bangladesh | Asia/Dhaka | UTC+6 | No |
| Bangkok, Thailand | Asia/Bangkok | UTC+7 | No |
| Singapore | Asia/Singapore | UTC+8 | No |
| Beijing, China | Asia/Shanghai | UTC+8 | No |
| Tokyo, Japan | Asia/Tokyo | UTC+9 | No |
| Adelaide, Australia | Australia/Adelaide | UTC+9:30 / +10:30 | Yes (Oct–Apr) |
| Sydney, Australia | Australia/Sydney | UTC+10 / +11 | Yes (Oct–Apr) |
| Auckland, New Zealand | Pacific/Auckland | UTC+12 / +13 | Yes (Sep–Apr) |
| Chatham Islands, New Zealand | Pacific/Chatham | UTC+12:45 / +13:45 | Yes (Sep–Apr) |
| Kiritimati, Kiribati | Pacific/Kiritimati | UTC+14 | No |
Methodology & data sources
Time zone data
When you click the map, paste coordinates, or pick a search result, the tool turns the latitude and longitude into an IANA time zone name such as America/New_York. This is done by the open-source tz-lookup library, which runs in your browser and uses boundary data bundled with it. The rules for each zone, including daylight saving, come from the IANA time zone database built into your browser and operating system, so they stay current when your browser updates.
Live local time
Once the IANA name is known, the tool uses your browser’s Intl.DateTimeFormat support (through toLocaleTimeString with the timeZone option) to show the current moment in that zone. A one-second timer refreshes the clock. The time is as accurate as your device clock, and most phones and computers keep it synced automatically.
UTC offset Calculation
The tool formats the current moment in the selected zone and compares it with the actual UTC time. The difference is the offset, so daylight saving is already included. It is shown as UTC±HH:MM (for example UTC-05:00) and as a short GMT form. Offsets that are not whole hours, such as UTC+5:30 for India and UTC+5:45 for Nepal, are handled correctly.
Daylight saving detection
The tool calculates the zone’s offset on January 1 and July 1 of the current year. If the two are the same, the zone does not observe daylight saving. If they differ, the tool compares today’s offset with the smaller of the two. When today’s offset is larger, daylight saving is in effect. This works for both the Northern and Southern Hemispheres.
Comparison and solar offset
Vs your local time is the difference between the selected place’s current offset and your device’s offset. The city cards use the same method, so each card shows how far that city is from the place you selected. The solar offset is the longitude divided by 15, rounded to a whole hour. It is a rough guide to where the sun is, and it often differs from the official offset because countries choose their own time zones.
Search, ZIP codes and place names
Place suggestions in the search box come from Photon, a search service built on OpenStreetMap data. US ZIP codes are looked up with Zippopotam.us. When you click the map, paste coordinates, or use your location, the place name comes from Nominatim, also built on OpenStreetMap.
Map
The map is drawn with MapLibre GL JS using OpenFreeMap tiles.
Daylight Saving Time explained
Light saving time (DST) is the practice of moving clocks forward, usually by one hour, during the warmer months so that evening daylight lasts longer. Countries that use it follow different calendars: the United States and Canada change in March and November, Europe in March and October, and the Southern Hemisphere in September or October and back in April, so the gap between two cities can shift by an hour a few times a year. Many countries have stopped changing clocks or never used DST, including much of Asia and Africa and most places near the equator. Rules change from time to time, so check the Daylight saving card in the tool’s results to see whether DST is in effect at the place you selected right now.
| Region | DST starts | DST ends | Notes |
|---|---|---|---|
| United States & Canada | 2nd Sunday of March | 1st Sunday of November | Most of both countries. Clocks change at 2:00 AM local time. |
| European Union & UK | Last Sunday of March | Last Sunday of October | All EU countries and the UK change on the same day. |
| Israel | Friday before the last Sunday of March | Last Sunday of October | Dates are set by national law. |
| Egypt | Last Friday of April | Last Thursday of October | Brought back in 2023. |
| Australia (NSW, VIC, SA, TAS, ACT) | 1st Sunday of October | 1st Sunday of April | Queensland, Western Australia and the Northern Territory do not observe DST. |
| New Zealand (incl. Chatham Islands) | Last Sunday of September | 1st Sunday of April | Southern Hemisphere summer, so the seasons are reversed. |
| Chile (most) | 1st Saturday of September | 1st Saturday of April | Clocks change at midnight. The Magallanes region does not change clocks. |
| Mexico (most) | Abolished in 2022 | — | Some northern border cities still follow the US schedule. |
| Russia | No clock changes since 2011 | — | Stopped changing clocks in 2011. |
| Turkey | No clock changes since 2016 | — | Uses UTC+3 all year. |
| Brazil | Abolished in 2019 | — | Uses the same time all year. |
| Arizona (excl. Navajo Nation) | Not observed | — | The Navajo Nation, inside Arizona, does observe DST. |
| Hawaii and Puerto Rico | Not observed | — | Same clock time all year. |
| Saskatchewan, Canada | Not observed | — | Stays on the same time all year. |
| Most of Asia and Africa | Not observed | — | Includes China, India, Japan, Singapore and Nigeria. Many countries near the equator never change clocks. |
Who uses time zone lookups
1. International meetings and remote teams
Distributed teams use time zone lookups to find meeting slots that suit everyone. Search each teammate’s city, then use the city cards to see how many hours apart you are, so nobody gets a call at midnight.
Example: A team in New York wants to call Dubai. In winter, 9:00 AM in New York is 6:00 PM in Dubai, which works. But 2:00 PM in New York is 11:00 PM in Dubai, which is too late.
2. Travel planning
Travelers check the time zone of their destination to plan calls home, sleep and arrival times. The Daylight saving card shows whether clocks there are currently shifted, and Vs your local time shows the exact gap from your own clock.
3. Scheduling cron jobs and deployments
Engineers who schedule automated jobs need the IANA name of the target region. A job set for 9 AM in New York should use America/New_York rather than a fixed UTC-05:00 offset, so daylight saving changes are handled automatically. The Copy button grabs the name for you.
4. Database design and migrations
Developers usually store timestamps in UTC and convert them for each user. The IANA name from this tool, such as America/New_York, is the value to save in a profile or location field, because a UTC offset alone can’t tell you when clocks change.
5. Customer support and SLA tracking
Support teams serving customers in several regions use time zones to keep response-time commitments and to avoid contacting people in the middle of the night. The city cards give a quick view of the current time across major regions.
6. Legal and compliance work
Contracts, filings and deadlines are often tied to the local time of a specific place. People preparing them use a lookup to confirm that place’s time zone and offset. For any critical deadline, always confirm with the official source as well.
7. Astronomy and event timing
Eclipses, meteor showers and rocket launches are usually announced in UTC or in the local time of one place. Paste the coordinates of your viewing spot to find its time zone, then convert the event to the local time where you will be watching.
8. Education and reference
Teachers and students use time zones to learn geography and to see why places keep different clocks. Click around the map to explore unusual zones such as Asia/Kathmandu at UTC+5:45, or to see how neighboring places can sit in different zones.
9. Webinars and online events
Organizers announce a start time that attendees around the world have to convert. Look up the host city, then use the city cards to check what time the event falls in New York, London, Dubai or Tokyo before you publish the schedule.
10. Freelancers and remote workers
Freelancers with clients abroad use time zone lookups to agree on call times and to know when a client is online. Search the client’s city to see their local time and how far it is from your own clock.
11. Social media and content scheduling
Creators and marketers post when their audience is awake, not when they are. Check the time zone of your main audience, then compare it with your own time so you can schedule posts for a morning or evening peak.
12. Family and friends abroad
People with relatives or friends in other countries use a lookup to find a good time to call. Search their city to see the current time there, so you don’t ring someone in the middle of the night.
Limitations & accuracy notes
- Accuracy depends on your device clock. The local time shown is your device’s clock displayed in the selected zone. If your device clock is wrong, the time shown will be wrong by the same amount. Most phones and computers sync their clocks automatically, so this is rare.
- Results near borders can be off. The tool matches your coordinates to a time zone boundary map. Close to a time zone or country border, the match may occasionally land on the wrong side. For important cases, such as a meeting or a deadline, double-check with an official source.
- Disputed regions follow the map data. In areas where a border is disputed, the result follows the boundary data the tool uses, which may not match every government’s view.
- Time zone rules change. Countries sometimes change their offsets or daylight saving rules. The tool reads these rules from your browser and operating system, so a very recent change may not show up until they are updated.
- Unusual daylight saving rules may confuse the detection. The tool checks the zone’s offset on January 1 and July 1 to decide whether daylight saving is active. Zones with irregular rules, such as places that shift their clocks around a religious period, can show an unexpected status.
- It shows the current moment only. The tool does not convert past or future dates, so it can’t tell you the offset a place had years ago or will have next summer.
- The solar offset is only a rough guide. It is the longitude divided by 15 and rounded to a whole hour. It shows where the sun roughly sits, and it often differs from the official offset because countries choose their own time zones.
- “Vs your local time” depends on your device settings. The comparison uses the time zone your device reports. If your device is set to the wrong zone, for example after travelling, the difference shown will be wrong too.
- ZIP codes work for the US only. The ZIP lookup accepts 5-digit US ZIP codes. For other countries, search by city or place name, since postal code results may be missing or inaccurate.
- Search results depend on OpenStreetMap data. Small villages, new buildings and places with several spellings may not appear, or may appear under a different name. If a place can’t be found, click the map or paste its coordinates instead.
- Coordinates must be in decimal format. Use numbers like 40.7128, -74.0060. Degrees, minutes and seconds (for example 40°42′46″N) are not supported.
- Short time zone names vary. Names like EST and PST appear for many US zones, but for many other places the short name shows as a GMT offset, such as GMT+9. The full name and the IANA name are always shown.
- It is not an official time source. The seconds on the clock come from your device, so the tool is meant for planning, travel and general reference. It is not suitable for work that needs exact timing, such as trading, scientific measurements or legal timestamps.
- Some features need an internet connection. The map, place search, ZIP lookup and place names all load from online services. Once the page has loaded, working out a time zone from coordinates happens in your browser.
- Heavy use may slow down search and place names. The free services behind search, ZIP lookup and place names have usage limits. If they are busy, suggestions or names may load slowly or not at all, while the time zone result itself is not affected.
- Place names are a convenience. When you click the map or use your location, the place name is a best guess and can be missing or approximate in remote areas. The time zone result does not depend on it.
- “Use location” needs permission. Your browser asks before sharing your location. On a computer without GPS, the position may be only approximate, so click the map or search for your city if the result looks wrong.
Glossary
Time zone
A region of the world that uses the same clock time. Time zones are not simply 24 equal strips, because countries choose their own, and some use half-hour or 45-minute offsets. The tool shows the zone for any place you pick.
IANA time zone database
A public database of the world’s time zones and their rules, including past and upcoming daylight saving changes. It is also called the tz database or Olson database. Operating systems, programming languages and browsers rely on it, and the tool gets its zone rules from your browser.
IANA name
The standard identifier for a time zone, written as Region/City, for example America/New_York, Europe/London or Asia/Tokyo. The tool shows it in the result and in the details, and the Copy button copies it. Use this name in software instead of an abbreviation.
UTC (Coordinated Universal Time)
The world’s reference time. It is the same everywhere and never changes for daylight saving. Other time zones are described as being ahead of or behind it.
GMT (Greenwich Mean Time)
The older time standard was based on the sun’s position at Greenwich, London. For everyday use, GMT and UTC are treated as the same time, and the tool shows offsets in both forms, such as UTC-05:00 and GMT-5.
UTC offset
How far a time zone is ahead of or behind UTC, in hours and minutes. New York is UTC-05:00 in winter and UTC-04:00 in summer. Some zones use offsets that are not whole hours, such as India at UTC+05:30 and Nepal at UTC+05:45.
Standard time
The regular clock time of a zone, without any daylight saving shift. The Daylight saving card shows “standard time” when clocks have not been moved.
Daylight saving time (DST)
A practice of moving clocks forward, usually by one hour, during the warmer months. Many countries do not use it, including most tropical ones. The Daylight saving card tells you whether it is in effect at the selected place, or whether the zone does not use it at all.
Display name
The full, readable name of a time zone, such as Eastern Standard Time. The tool shows it beside a short name, for example EST, where one exists.
Time zone abbreviation
A short code such as EST, PST or JST. Abbreviations can be confusing, because CST can mean US Central, China Standard or Cuba Standard Time. For many places the short name is just a GMT offset, such as GMT+9. This is why the IANA name is the safest way to identify a zone.
Local time
The current time at the selected place. The tool works it out from your device’s clock and updates it every second.
Device time zone
The time zone is set on your own phone or computer. The “Vs your local time” card compares the selected place with it, and the note under the clock tells you whether the place is in the same zone as your device.
Coordinates (latitude and longitude)
Two numbers that mark a point on Earth. Latitude runs from -90 to 90 and longitude from -180 to 180. You can paste them into the tool in decimal form, for example 40.7128, -74.0060, to find the time zone of an exact spot.
Time zone boundary
The line on a map where one time zone ends and the next begins. The tool compares your coordinates with these boundaries to find the right zone, which is why results right on a border can occasionally be off.
Geocoding and reverse geocoding
Geocoding turns a place name or ZIP code into coordinates, which happens when you search. Reverse geocoding does the opposite and turns coordinates into a place name, which happens when you click the map or use your location.
Solar time
Time based on where the sun is in the sky. Each degree of longitude equals 4 minutes of solar time. Official time zones follow national borders and local decisions, so they only roughly match solar time.
Solar offset
The tool’s rough estimate of how far a place is from UTC based on longitude alone: longitude divided by 15, rounded to a whole hour. It can differ from the official offset, and the difference shows how much a country’s chosen time zone departs from the sun.