World Clock and Time Zone Map
Check the current local time in cities around the world and explore global time zones on an interactive map.
Loading…
Comparing what time it is somewhere else in the world used to mean doing mental math against a UTC offset you'd have to look up — this interactive map shows the current local time in cities everywhere at a glance, calculated straight from your device's own time zone data.
What is a World Clock, and how do you check the time in a specific city?
It's a tool that shows the current local time in cities around the world on an interactive map, so you can compare times between locations without doing the math yourself. Search for or click a city — New York, London, Tokyo, or anywhere else on the map — to see its current local time and time zone instantly.
What is a time zone, and what does the color-coded map actually show?
A time zone is a region that keeps the same standard time, which is why local time can differ noticeably between cities even at the exact same moment. The map is color-coded by UTC offset, so the time difference between any two regions is visible geographically at a glance, rather than something you have to calculate.
What is the International Date Line, and why does crossing it change the date?
The International Date Line is an imaginary boundary running mostly along the 180° line of longitude through the Pacific Ocean, marking where the calendar date changes even though the clock time on either side can be identical. Cross it heading west (roughly toward Asia) and you skip a day forward; cross it heading east (roughly toward the Americas) and you go back a day — the same trip repeated in the opposite direction adds or subtracts a full 24 hours from the calendar, not the clock.
Why can you look at "tomorrow" from a beach in Alaska?
Because of two tiny islands in the middle of the Bering Strait: Big Diomede, belonging to Russia, and Little Diomede, belonging to the United States, sit only about 2.4 miles (3.8 km) apart — close enough to see each other — but the International Date Line runs directly between them. That gap in distance translates into a roughly 21-hour gap in the calendar (20 in summer with daylight saving), which is exactly why Big Diomede is nicknamed "Tomorrow Island" and Little Diomede "Yesterday Isle": looking from the American island toward the Russian one is, quite literally, looking a day into the future.
Why does the date line zigzag instead of running straight down 180° longitude?
Politics and trade, mostly. If the line ran perfectly straight, it would slice several Pacific island nations in half, putting different islands of the same country on different calendar dates — a genuine headache for running a government or a business. Kiribati fixed this for itself on December 31, 1994, moving the date line eastward around its Line Islands so the whole country shared one date, aligned with the trade schedules of Australia, New Zealand and East Asia rather than the Americas; that shift is also why Kiritimati (Christmas Island), part of Kiribati, sits in the world's easternmost time zone, UTC+14, and is the first inhabited place on Earth to reach every new year. Samoa made the reverse-direction move in 2011, skipping December 30 entirely — the country went to bed on Thursday the 29th and woke up on Saturday the 31st — specifically to fall on the same side of the line as its biggest trading partners, Australia, New Zealand and China. Those two national decisions, each made for entirely practical economic reasons, are why the date line bends sharply around the Pacific instead of tracing a straight line, and why the exact time difference between some neighboring islands can run as high as 25 or 26 hours instead of a clean 24.
How do you compare the time in two cities, or find the time difference between them?
Select or search for both cities and compare their displayed local times side by side — the gap between the two is the current time difference. This is distinct from a time zone converter, which typically works out what a specific time in one place would translate to in another; a World Clock instead shows what time it is right now, everywhere, at once.
Why does the time difference between two cities sometimes change, and what is daylight saving time?
Some locations observe daylight saving time — moving clocks forward for part of the year — while others don't, and the exact dates their clocks change can differ too, so the gap between two cities can shift over the course of the year even though neither city's own time zone changed. Because this tool calculates each city's time using your browser's built-in time zone database — the same official data operating systems use — daylight saving and other timekeeping changes are reflected automatically without needing an update.
How can a World Clock actually help with scheduling and travel?
Check the local time in each participant's city before proposing a meeting time, so a call doesn't land outside anyone's normal working hours — genuinely useful for scheduling international meetings, coordinating with colleagues or clients overseas, or just understanding the time difference at a travel destination before planning calls home and activities around it.
Is the World Clock accurate, free, and does it collect personal data?
Yes, free, and no. Times are computed live from your device's built-in time zone database rather than a static lookup table, so official changes are reflected automatically; it runs entirely in your browser with no installation, sign-up or usage limit. Clicking a city on the map computes its time locally in your browser without uploading anything — only searching for a city not already shown sends that search text to look up its location.
Why does the whole world agree on time zones in the first place?
Before the 1880s, it didn't — every town kept its own local time based on the sun, which was mostly harmless until railroads made it genuinely dangerous, since two trains scheduled against two different towns' clocks could end up on the same track at the same moment. Scottish-Canadian railway engineer Sandford Fleming proposed the fix in 1878: divide the globe into 24 time zones, each 15 degrees of longitude and exactly one hour apart. U.S. railroads adopted his system in 1883, and in October 1884, delegates from 25 nations met in Washington, D.C. for the International Meridian Conference, formally setting the prime meridian at Greenwich, England and defining every time zone in the world as an offset from it — the exact same worldwide grid this map is still built on today.
Is World Clock & Time Zone Map free to use?
Yes. World Clock & Time Zone Map is completely free, with no sign-up and no usage limits.
Do I need to install any software?
No installation is required. World Clock & Time Zone Map runs in your browser and fetches up-to-date public data from our server to show accurate results.
Is my data kept private?
No personal file or text is uploaded. We only request the public data needed to show your result (such as exchange rates, official statistics, or location data).