Time Zones — every UTC offset with the current time

How to use All Time Zones

Scroll the list or type a city into the search box. Every row is a live clock: the zone's name, its current time, and its offset from UTC. Pin the zones you use often and the page becomes your personal world clock — colleagues in Tokyo, family in London, a server in Arizona, all on one screen. Because the rows update every second, it doubles as a US time zones clock when you only care about the four mainland bands.

What time is it in California?

California runs on Pacific Time: UTC−8 in winter and UTC−7 while daylight saving is in effect. So if you are asking what time is it in California right now, the live clock in its row is the exact answer — and it is always three hours behind New York, in every season, because both states switch their clocks on the same dates.

Reading the US time zones map

The mainland splits into four bands, east to west: Eastern, Central, Mountain and Pacific, each one hour apart. Alaska sits another hour behind Pacific, and Hawaii two hours behind that. Two famous exceptions hide in the map: most of Arizona stays on Mountain Standard Time all year and skips daylight saving, and Hawaii never observes it at all — which is why the gap between Honolulu and Los Angeles changes size twice a year while neither city touches its clocks the rest of the time.

India, London, Tokyo and the half-hour club

India keeps a single clock for the whole country: IST, five and a half hours ahead of UTC, with no seasonal changes — so checking India time now is one lookup, whether you are calling Mumbai or Kolkata. Japan is UTC+9 year-round; Tokyo never moves its clocks either. London belongs to the United Kingdom's zone: GMT in winter, one hour forward in summer, and the rest of England moves with it. Australia is messier — several zones, some on half-hour offsets, some observing summer time and some not — which is why the list shows its cities separately instead of pretending one clock covers the continent.

Time zones are politics drawn on top of astronomy: China spans the width of five solar hours and keeps a single clock, while parts of Australia run on half-hour steps. The lines were drawn by parliaments, not by the sun.

UTC is the reference point; every zone is written as an offset from it. Half-hour and even quarter-hour offsets exist — an offset does not have to be a whole hour. A zone's offset can change with the season; the list always shows what applies right now.