World Clock

Check current time in any major city

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How Does the World Clock Work?

The world clock displays the current local time for 20+ major cities around the globe, updating every second in real-time. It uses the browser's Intl.DateTimeFormat API with IANA timezone identifiers, which means it automatically handles daylight saving time changes. Each city card shows the current time, date, AM/PM indicator, and UTC offset. Use the search box to quickly filter and find any city.

Frequently Asked Questions

How does the world clock work?
The world clock uses the Intl.DateTimeFormat API in your browser to display accurate local times for each city based on their IANA timezone identifiers.
Does it update automatically?
Yes, the times update every second in real-time without needing to refresh the page.
Does it handle daylight saving time?
Yes, because it uses IANA timezone data, it automatically accounts for daylight saving time changes in each city.

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What time is it there? IST offsets for the cities people actually check

India Standard Time is UTC+5:30 and never changes — India has had no daylight saving since 1945, so IST is the same all year. Every other city on this list except a handful shifts by an hour twice a year, which is why the gap to New York or London is not a fixed number.

Hours behind or ahead of IST

CityStandard offsetVs IST (their winter)Vs IST (their summer / DST)
LondonUTC+0 / +15:30 behind4:30 behind
New York, TorontoUTC−5 / −410:30 behind9:30 behind
ChicagoUTC−6 / −511:30 behind10:30 behind
Los Angeles, SeattleUTC−8 / −713:30 behind12:30 behind
Berlin, Paris, AmsterdamUTC+1 / +24:30 behind3:30 behind
Dubai, Abu DhabiUTC+41:30 behindno DST
Riyadh, MoscowUTC+32:30 behindno DST
Singapore, Hong Kong, PerthUTC+82:30 aheadno DST
Tokyo, SeoulUTC+93:30 aheadno DST
Sydney, MelbourneUTC+10 / +114:30 ahead5:30 ahead
AucklandUTC+12 / +136:30 ahead7:30 ahead
JohannesburgUTC+23:30 behindno DST
São PauloUTC−38:30 behindno DST since 2019

India’s neighbours — the awkward offsets

CountryZoneVs IST
Sri LankaUTC+5:30identical to IST
NepalUTC+5:4515 minutes ahead
PakistanUTC+530 minutes behind
BangladeshUTC+630 minutes ahead
MyanmarUTC+6:301 hour ahead
MaldivesUTC+530 minutes behind
BhutanUTC+630 minutes ahead

When the clocks change

The two DST calendars that matter most to Indian teams do not line up. The United States springs forward on the second Sunday in March and falls back on the first Sunday in November. Europe and the UK change on the last Sunday in March and the last Sunday in October. That leaves two ragged windows each year — mid-March and late October — when the US and Europe are an hour closer to each other than usual, and any recurring call booked in local time drifts.

Worked example — booking a call

You are in Bengaluru and want 9:30 am New York time in January

January is US standard time, so New York is 10:30 behind IST.

9:30 am + 10:30 = 20:00.

8:00 pm IST. The same call in July is 7:00 pm IST, because New York moves to daylight time and the gap shrinks to 9:30.

Why IST is a half-hour zone

IST is pinned to the 82°30′E meridian, which runs near Mirzapur in Uttar Pradesh — almost exactly the middle of India’s span. Because that meridian is five and a half hours of rotation from Greenwich, the offset lands on a half hour rather than a whole one. India uses one zone for a country wide enough for two, which is why sunrise in Kohima can be nearly two hours ahead of sunrise in Dwarka on the same clock.

More questions people ask

Does India have daylight saving time?

No. India abolished daylight saving after 1945 and has run a single fixed zone, UTC+5:30, ever since. It was briefly reintroduced during the 1962, 1965 and 1971 wars.

How many hours is India ahead of New York?

India is 9 hours 30 minutes ahead of New York during US daylight time (mid-March to early November) and 10 hours 30 minutes ahead for the rest of the year.

How many hours is India ahead of the UK?

IST is 5 hours 30 minutes ahead of London in winter (GMT) and 4 hours 30 minutes ahead in summer, when the UK is on British Summer Time.

How many time zones does India have?

One official zone. There have been repeated proposals for a second zone for the north-east, and Assam’s tea gardens still informally keep "Bagan time" an hour ahead, but that has no legal standing.

What is UTC and how is it different from GMT?

UTC is the atomic-clock time standard the world synchronises to; GMT is a time zone that happens to equal UTC+0. In everyday use they are interchangeable, but only UTC has leap seconds defined against it.

Everything on this page runs in your browser — nothing you type is uploaded or stored.

Answers, not just a number

Short, exact answers to the questions people ask alongside this tool — the number first, then the working.

For teams, not just visitors

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