Power Calculators

🕒 Time Zone Difference Calculator: Convert Time Between Cities

What time is it there? Convert a time between any two cities, with daylight saving applied.

By the Power Calculators team Updated

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Formula at a glance

Time Zone Difference Calculator: Time there — Time here − offset here + offset there. Example: 9 AM in Delhi → New York → 9:00 AM, Thu 12 Nov in New Delhi is: 10:30 PM, Wed 11 Nov in New York (previous day)
How the Time Zone Difference Calculator works: Time there — Time here − offset here + offset there

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📘 About the Time Zone Difference Calculator

India uses one time zone, IST (UTC+5:30), all year. Many other countries move their clocks forward in summer, so the difference with India changes during the year — New York is 9½ hours behind India in summer and 10½ hours behind in winter.

Choose two cities, a date and a time. The calculator uses the official IANA time-zone database to give the converted time, the exact difference, each city's UTC offset and whether daylight saving time is on, the next clock change, and an hour-by-hour table showing work hours.

🧮 Formula

Time there
Time here − offset here + offset there
Difference
UTC offset (there) − UTC offset (here), on that date

✏️ Worked examples

9 AM in Delhi → New York

You enter
From cityNew Delhi, India
To cityNew York, USA
Time in the first city9:00 AM
You get
9:00 AM, Fri 13 Nov in New Delhi is10:30 PM, Thu 12 Nov in New York (previous day)
Time differenceNew York is 10 h 30 min behind New Delhi
New Delhi time zoneUTC+5:30 · IST
New York time zoneUTC−5 · EST
Next clock change in New York14 Mar 2027 → UTC−4

10:30 PM, Thu 12 Nov in New York (previous day).

6 PM in London → Sydney

You enter
From cityLondon, UK
To citySydney, Australia
Time in the first city6:00 PM
You get
6:00 PM, Fri 13 Nov in London is5:00 AM, Sat 14 Nov in Sydney (next day)
Time differenceSydney is 11 h ahead of London
London time zoneUTC+0 · GMT
Sydney time zoneUTC+11 · AEDT (daylight saving time)
Next clock change in Sydney4 Apr 2027 → UTC+10
Next clock change in London28 Mar 2027 → UTC+1

5:00 AM, Sat 14 Nov in Sydney (next day).

🧭 How to use this calculator

What you enter

  • From city
  • To city
  • Date (optional)Leave blank for today.
  • Time in the first city

What you get

  • 9:34 AM, Fri 13 Nov in New Delhi is
  • Time difference
  • New Delhi time zone
  • New York time zone
  • Next clock change in New York

💡 Common time zones

  • IST — India, UTC+5:30
  • GST — UAE, UTC+4
  • GMT/BST — UK, UTC+0 / +1
  • EST/EDT — US East, UTC−5 / −4
  • PST/PDT — US West, UTC−8 / −7
  • AEST/AEDT — Sydney, UTC+10 / +11

❓ Frequently asked questions

What is the time difference between India and the USA?

New York is 9 h 30 min behind India during US daylight saving time (mid-March to early November) and 10 h 30 min behind in winter. California is 12 h 30 min or 13 h 30 min behind.

What is the time difference between India and the UK?

The UK is 4 h 30 min behind India in summer (BST) and 5 h 30 min behind in winter (GMT).

What is the time difference between India and Dubai?

Dubai (GST, UTC+4) is 1 h 30 min behind India all year — neither changes its clocks.