Interactive World Time Zone Map
Real time zone borders with live local times, UTC offsets, daylight saving and the moving line between day and night — now, or at any date and time you choose.
Time Zone Converter
Convert any past or future date and time between cities, with daylight saving handled on both sides.
Open converterMeeting Planner
Find the hours that work for everyone across several cities, then download the meeting as a calendar file.
Plan a meetingHow to read the map
Each coloured area is one IANA time zone — the same identifiers (such as Europe/Paris or America/Chicago) that phones and computers use to set their clocks. Neighbouring whole-hour offsets alternate between darker and lighter green, and zones on a half- or quarter-hour offset, such as India (UTC+5:30) and Nepal (UTC+5:45), are shown in olive. Select a city or zone and every area on the same offset lights up.
The faint vertical bands mark the theoretical 15° slices, one per hour from UTC−12 to UTC+12. At sea, ships keep these nautical zones; on land, borders follow countries and regions instead. Comparing the two shows how far some places drift from their sun time: western China is more than two hours ahead of the sun.
The darker shading is night, with the fade marking civil and nautical twilight. The dashed line is where the sun is on the horizon, and the yellow dot is where it stands overhead. In China, the map shows the official Beijing time (Asia/Shanghai) for Xinjiang as well; the separate Asia/Urumqi zone (UTC+6) reflects time used locally there.
More time zone pages
See how the main abbreviations work on the UTC, GMT, Eastern, Central, Pacific, Central European and India time pages. Countries with several zones have their own pages: USA, Canada, Australia, China, India, UK, Germany and Japan. For the precise time on your device, use the exact time check.
Frequently Asked Questions
Why aren't time zones straight lines on the map?
In theory each 15° of longitude is one hour, which is what the faint 15° bands show. Real time zones are set by governments and follow national and regional borders. China uses one clock across about 60° of longitude, Spain and France sit an hour ahead of their meridian, and India, Iran, Afghanistan and Nepal use half- or quarter-hour offsets. The coloured areas on this map are those legal zones, not the bands.
What does a UTC offset mean?
Coordinated Universal Time (UTC) is the reference clock every zone is measured against. UTC+1 means local clocks are one hour ahead of UTC, UTC−5 means five hours behind. Offsets range from UTC−12 to UTC+14, and a place's offset can change during the year when it observes daylight saving time.
How does daylight saving time show up on the map?
Every zone is coloured by the offset it uses at the time shown, so when Europe or North America switch to summer time their zones change offset on the map. Move the time slider or pick a date to see it: in July, London is on UTC+1 and New York on UTC−4; in January they are back on UTC+0 and UTC−5. Southern-hemisphere zones such as Sydney change in the opposite season.
Is the night shading the same as a time zone?
No. The shading shows where the sun is below the horizon, calculated from the sun's position for the time shown. It moves steadily west by 15° an hour and its shape changes with the seasons, while time zone borders stay fixed. A city can be in darkness at 17:00 in winter and in daylight at 21:00 in summer without its time zone changing.
What is the difference between UTC and GMT?
For everyday use they show the same time. UTC is the atomic-clock standard that offsets are defined against; GMT is the time zone used by the UK in winter and by several West African countries all year. The UK switches to British Summer Time (UTC+1) from late March to late October, while UTC never changes.
How does the International Date Line work?
The date line runs roughly along 180° longitude in the Pacific, bending around island nations. Crossing it westward adds a day, eastward subtracts one. Kiribati's Line Islands use UTC+14 while American Samoa, a short distance away, uses UTC−11, 25 hours apart on the clock: the two are always on different dates, and for one hour each day they are two calendar days apart.
How accurate are the borders on this map?
The borders come from the timezone-boundary-builder project, which assembles every IANA time zone from OpenStreetMap data. For a fast, light map they are simplified to roughly 10–20 km. The colours and clocks use each zone's full IANA rules, including the 2026 changes in Canada. To check the time at an exact address near a border, use the city or country page or local official sources.