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Zone to zone

IST to EST — Eastern Time is 10 hours 30 minutes behind

Eastern Time (EST) is 10 hours 30 minutes behind of India Standard Time (IST) while both are on standard time. Once daylight saving starts the gap becomes 9 hours 30 minutes behind, so any recurring meeting between these two regions moves by an hour twice a year.

Standard time

10 hours 30 minutes behind

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

Daylight saving

9 hours 30 minutes behind

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

India Standard Time sits at UTC+5:30 in winter and does not observe daylight saving. Eastern Time sits at UTC−5 and UTC−4 respectively. The difference between those two offsets is the number you add or subtract.

Daylight saving

Standard working days do not overlap at all. One side will need to take the call early or late, so alternate who makes the sacrifice.

Where this conversion gets used

  • Calls with American clients
  • US market hours
  • delivery-team handovers
  • visa and embassy appointments

IST to EST — every hour

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

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

Questions people ask

10 hours 30 minutes behind during standard time, and 9 hours 30 minutes behind while daylight saving is running.

Related conversions

EST to ISTGMT to ISTGMT to UTCPST to IST

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