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Zone to zone

CET to IST — India Standard Time is 4 hours 30 minutes ahead

India Standard Time (IST) is 4 hours 30 minutes ahead of Central European Time (CET) while both are on standard time. Once daylight saving starts the gap becomes 3 hours 30 minutes ahead, so any recurring meeting between these two regions moves by an hour twice a year.

Standard time

4 hours 30 minutes ahead

Applies while neither zone is on daylight saving — broadly November to March in the northern hemisphere.

Daylight saving

3 hours 30 minutes ahead

Applies while the clocks are forward. This pair does not keep a constant gap, so check the date.

Full-day table Questions

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How the two zones line up

Central European Time sits at UTC+1 in winter and UTC+2 in summer. India Standard Time sits at UTC+5:30 all year. The difference between those two offsets is the number you add or subtract.

Daylight saving

There are a few hours of shared working time. Booking towards the start of the later zone's day usually suits everybody.

Where this conversion gets used

  • Supplier and factory calls
  • offshore delivery teams
  • shipping cut-offs
  • remote hiring interviews

CET to IST — every hour

Both columns are computed from the IANA database, so they follow the real transition dates.

CET IST — standard IST — daylight saving
12:00 am 4:30 am 3:30 am
1:00 am 5:30 am 4:30 am
2:00 am 6:30 am 5:30 am
3:00 am 7:30 am 6:30 am
4:00 am 8:30 am 7:30 am
5:00 am 9:30 am 8:30 am
6:00 am 10:30 am 9:30 am
7:00 am 11:30 am 10:30 am
8:00 am 12:30 pm 11:30 am
9:00 am 1:30 pm 12:30 pm
10:00 am 2:30 pm 1:30 pm
11:00 am 3:30 pm 2:30 pm
12:00 pm 4:30 pm 3:30 pm
1:00 pm 5:30 pm 4:30 pm
2:00 pm 6:30 pm 5:30 pm
3:00 pm 7:30 pm 6:30 pm
4:00 pm 8:30 pm 7:30 pm
5:00 pm 9:30 pm 8:30 pm
6:00 pm 10:30 pm 9:30 pm
7:00 pm 11:30 pm 10:30 pm
8:00 pm 12:30 am (next day) 11:30 pm
9:00 pm 1:30 am (next day) 12:30 am (next day)
10:00 pm 2:30 am (next day) 1:30 am (next day)
11:00 pm 3:30 am (next day) 2:30 am (next day)

Questions people ask

4 hours 30 minutes ahead during standard time, and 3 hours 30 minutes ahead while daylight saving is running.

Related conversions

PST to IST GMT to IST EST to JST PST to JST

All conversions →

Booking something recurring?

A fixed clock time drifts when either side changes its clocks. Our guides explain how to stop that happening.

Read the DST guide Plan a meeting