World Clock
The clocks below show the current local time in major cities from Honolulu to Sydney, each with its UTC offset. Your own zone is marked so you can see the gap at a glance.
City clocks by region
Europe7
Africa3
The Middle East3
Asia8
Australia and the Pacific4
North America8
South America3
How do you know what time it is in another city?
Find the city's UTC offset for today's date and add it to the current UTC time. The grid does this for you once a second, including any daylight saving shift.
- Earliest offset in use
- UTC−12
- Latest offset in use
- UTC+14
- Hours in one day
- 24
Reading the clock grid
Each tile shows a city's local time, its weekday and date, and the zone abbreviation with the UTC offset now in force. Tiles run from west to east, so the time grows as you read along the rows. A tile marked as your zone uses the same offset as your device, which makes it easy to count the hours to the others.
Tiles with a link open the city's own page. There you get a large live clock, the exact dates and times of the next clock changes, and a table of the gap to every other city in January and July. To turn a meeting time into another zone instead, use the time zone converter or a pair page such as IST to CST.
Why the offsets change during the year
Cities in North America, Europe and parts of Australia move their clocks an hour forward in spring and back in autumn. The Southern Hemisphere does it in the opposite months, so the gap between Sydney and London can be nine, ten or eleven hours depending on the date.
Other cities keep one offset all year. Dubai, Delhi, Shanghai, Seoul and Honolulu do not observe daylight saving, so their time differs from yours only when your own clocks change. The Government of the UK and the US Department of Transportation publish the rules for their countries.
Time zones are set by countries, not by longitude
In theory each zone covers 15 degrees of longitude, one hour of the Earth's turn. In practice governments draw the lines. China uses a single zone, UTC+8, across a country that spans about five theoretical zones, and India uses UTC+5:30 for the whole country.
The time zone data your browser uses is the IANA time zone database, which tracks these decisions for every region. Its zone names, such as Europe/Paris or Asia/Tokyo, appear on each city page next to the everyday abbreviations.
World clock questions
Where does the world clock get its time?
From your device clock, combined with the time zone rules in your browser. If your device clock is right, every city is right too; nothing is fetched from a server.
Does the world clock adjust for daylight saving time?
Yes. Each city's offset comes from the IANA time zone database, which records when every zone changes its clocks, so a city shows summer time automatically.
Why does a city show a different date from mine?
Cities far east or west of you can already be in tomorrow or still in yesterday. The date line under each clock shows the local weekday and date.
How do I find a city that is not in the grid?
Open the list of city clocks by region below; each page shows the live time, the zone's clock changes for this year and next, and the gap to other cities.