IRST to IST time converter

IST is 2 hours ahead of IRST. When it is 9:00 AM in IRST, it is 11:00 AM in IST.

IRST UTC+3:30

Saturday, October 17, 2026

IST UTC+5:30

Saturday, October 17, 2026

IRST
Iran Standard Time
Sat, Oct 17
UTC+3:30
IST
India Standard Time
Sat, Oct 17
UTC+5:30+2h
Finding your time zone…
Shared working hours (9:00–18:00)

IRST to IST conversion table

Every hour of today in IRST and the matching time in IST. Light rows are typical working hours (9:00–18:00).

IRSTIST
12:00 AM2:00 AM
1:00 AM3:00 AM
2:00 AM4:00 AM
3:00 AM5:00 AM
4:00 AM6:00 AM
5:00 AM7:00 AM
6:00 AM8:00 AM
7:00 AM9:00 AM
8:00 AM10:00 AM
9:00 AM11:00 AM
10:00 AM12:00 PM
11:00 AM1:00 PM
12:00 PM2:00 PM
1:00 PM3:00 PM
2:00 PM4:00 PM
3:00 PM5:00 PM
4:00 PM6:00 PM
5:00 PM7:00 PM
6:00 PM8:00 PM
7:00 PM9:00 PM
8:00 PM10:00 PM
9:00 PM11:00 PM
10:00 PM12:00 AM+1 day
11:00 PM1:00 AM+1 day

Best time to call or meet

Both sides are at work from 9:00 AM – 4:00 PM in IRST (11:00 AM – 6:00 PM in IST).

Daylight saving time and the difference

The difference stays 2 hours all year.

More conversions

IST to IRSTIRST to UTCIRST to GMTIRST to ESTIRST to CSTIRST to MSTIRST to PSTIRST to CETIRST to MSKIRST to GSTIRST to PKTIRST to SGTIRST to PHT
UTC to ISTGMT to ISTEST to ISTCST to ISTMST to ISTPST to ISTCET to ISTMSK to ISTGST to ISTPKT to ISTSGT to ISTPHT to IST

Questions and answers

What is the time difference between IRST and IST?

IST is 2 hours ahead of IRST.

What time is it in IST when it is 9 AM in IRST?

When it is 9:00 AM in IRST, it is 11:00 AM in IST.

When is the best time to call IST from IRST?

Both sides are at work from 9:00 AM – 4:00 PM in IRST (11:00 AM – 6:00 PM in IST).

Does the time difference between IRST and IST change?

No. The difference stays 2 hours all year.