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Elevation & time

World time zone map

Every time zone on Earth on one map, colored by its UTC offset right now and showing the current time in each one. Tap a zone to see its details.

Loading the map…

UTC offsets in use right now

Each color is one hour; stripes mark half-hour and 45-minute zones. Tap an offset to see its zones.

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Selected zone

Tap the map to see a zone’s time, name and clock changes.

Half-hour and 45-minute zones right now

Zones that aren’t a whole number of hours from UTC, with their live time.

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How to use it

  1. Read the colors

    Each color is one hour of UTC offset and repeats every eight hours. Stripes mark half-hour and 45-minute zones.

  2. Check the time

    Each zone shows its live time, updated every minute. Zoom in to see the time in smaller zones.

  3. Tap a zone

    You’ll see its name, UTC offset, whether and when the clocks change, and how far it is from your time. Use the legend to highlight every zone with the same offset.

Why time zones aren’t straight bands

In theory, Earth is split into 24 time zones of 15° of longitude, one per hour. In practice, each country picks its own time: China uses a single one (UTC+8) even though it spans about 60° of longitude, while the contiguous US has four main zones whose lines zigzag along county and state borders.

Straight bands only show up at sea: outside territorial waters, ships use nautical time, one 15° band per hour. They have the palest colors on the map.

Half-hour and 45-minute time zones

Not every zone is a whole number of hours from UTC. These are the zones in the IANA database that aren’t, in January or in July, worked out when the page was published:

Zones that aren’t whole hours from UTC (2026)
NameIANA zoneIn JanuaryIn July
Marquesas TimePacific/MarquesasUTC−9:30UTC−9:30
Newfoundland Standard TimeAmerica/St_JohnsUTC−3:30UTC−2:30
Iran Standard TimeAsia/TehranUTC+3:30UTC+3:30
Afghanistan TimeAsia/KabulUTC+4:30UTC+4:30
India Standard TimeAsia/ColomboUTC+5:30UTC+5:30
India Standard TimeAsia/KolkataUTC+5:30UTC+5:30
Nepal TimeAsia/KathmanduUTC+5:45UTC+5:45
Myanmar TimeAsia/YangonUTC+6:30UTC+6:30
Cocos Islands TimeIndian/CocosUTC+6:30UTC+6:30
Australian Central Western Standard TimeAustralia/EuclaUTC+8:45UTC+8:45
Australian Central Standard TimeAustralia/DarwinUTC+9:30UTC+9:30
Australian Central Daylight TimeAustralia/AdelaideUTC+10:30UTC+9:30
Australian Central Daylight TimeAustralia/Broken_HillUTC+10:30UTC+9:30
Lord Howe Daylight TimeAustralia/Lord_HoweUTC+11UTC+10:30
Chatham Daylight TimePacific/ChathamUTC+13:45UTC+12:45

Lord Howe Island, Australia, is an odd one: its daylight saving time moves clocks forward by just half an hour.

How many time zones are there?

The boundaries we use have 419 zones on land and 25 open-sea bands. In January 2026 there are 38 different UTC offsets, and 38 in July, from UTC−12 (only at sea) to UTC+14 (the Line Islands in Kiribati).

That’s why, every day from 10:00 to 11:00 UTC, inhabited places are on three different dates at once: in American Samoa (UTC−11) it’s still the day before, while in Kiritimati (UTC+14) it’s already the next day.

Where the data comes from

The boundaries come from timezone-boundary-builder, version 2026e, drawn along OpenStreetMap borders and simplified to 3 kilometers so the map loads fast; the details of a tapped zone use the same boundaries at 50-meter detail. The map file (127 KB) only downloads once the map scrolls into view.

Your browser works out the time and UTC offset of each zone with the IANA time zone database, so the map stays current when a country changes its rules, as soon as your system updates.

Frequently asked questions

How often does the map’s time update?

Every minute, using your device’s clock: if your clock is off, so is the map. It pauses while the tab is hidden and catches up when you come back.

Why does a zone change color during the year?

Because the color follows the current UTC offset. When New York switches to daylight saving time, it moves from UTC−5 to UTC−4 and takes that hour’s color.

Where is it latest?

In Kiritimati and the rest of Kiribati’s Line Islands (UTC+14): they’re the first to start each day. The last are American Samoa and Niue (UTC−11).

What are the bands at sea?

Nautical time, used on the high seas: one 15° band per hour, with no daylight saving time. Territorial waters, up to 12 nautical miles offshore, use the time on the coast.

Related tools

All tools
What is my elevation? See your current elevation above sea level, read from terrain data instead of your phone’s GPS. Elevation finder Click anywhere on the map or search for a place to get its elevation above sea level. Elevation profile Draw a line on the map and get its elevation profile, with the total climb and descent. GPX route profile Upload a GPX from Strava, Garmin or Wikiloc to see its climb, slopes by section and an estimated time.

Sources