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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.

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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.

CETIST — standardIST — daylight saving
12:00 am4:30 am3:30 am
1:00 am5:30 am4:30 am
2:00 am6:30 am5:30 am
3:00 am7:30 am6:30 am
4:00 am8:30 am7:30 am
5:00 am9:30 am8:30 am
6:00 am10:30 am9:30 am
7:00 am11:30 am10:30 am
8:00 am12:30 pm11:30 am
9:00 am1:30 pm12:30 pm
10:00 am2:30 pm1:30 pm
11:00 am3:30 pm2:30 pm
12:00 pm4:30 pm3:30 pm
1:00 pm5:30 pm4:30 pm
2:00 pm6:30 pm5:30 pm
3:00 pm7:30 pm6:30 pm
4:00 pm8:30 pm7:30 pm
5:00 pm9:30 pm8:30 pm
6:00 pm10:30 pm9:30 pm
7:00 pm11:30 pm10:30 pm
8:00 pm12:30 am (next day)11:30 pm
9:00 pm1:30 am (next day)12:30 am (next day)
10:00 pm2:30 am (next day)1:30 am (next day)
11:00 pm3:30 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

EST to JSTGMT to ISTPST to ISTPST 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 guidePlan a meeting