IRST to GMT time converter

GMT is 3 hours 30 minutes behind IRST. When it is 9:00 AM in IRST, it is 5:30 AM in GMT.

IRST UTC+3:30

Friday, October 16, 2026

GMT UTC

Friday, October 16, 2026

IRST
Iran Standard Time
Fri, Oct 16
UTC+3:30
GMT
Greenwich Mean Time
Fri, Oct 16
UTC-3h 30m
Finding your time zone…
Shared working hours (9:00–18:00)

IRST to GMT conversion table

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

IRSTGMT
12:00 AM8:30 PM−1 day
1:00 AM9:30 PM−1 day
2:00 AM10:30 PM−1 day
3:00 AM11:30 PM−1 day
4:00 AM12:30 AM
5:00 AM1:30 AM
6:00 AM2:30 AM
7:00 AM3:30 AM
8:00 AM4:30 AM
9:00 AM5:30 AM
10:00 AM6:30 AM
11:00 AM7:30 AM
12:00 PM8:30 AM
1:00 PM9:30 AM
2:00 PM10:30 AM
3:00 PM11:30 AM
4:00 PM12:30 PM
5:00 PM1:30 PM
6:00 PM2:30 PM
7:00 PM3:30 PM
8:00 PM4:30 PM
9:00 PM5:30 PM
10:00 PM6:30 PM
11:00 PM7:30 PM

Best time to call or meet

Both sides are at work from 12:30 PM – 6:00 PM in IRST (9:00 AM – 2:30 PM in GMT).

Daylight saving time and the difference

The difference stays 3 hours 30 minutes all year.

More conversions

GMT to IRSTIRST to UTCIRST to ESTIRST to CSTIRST to MSTIRST to PSTIRST to CETIRST to MSKIRST to GSTIRST to PKTIRST to ISTIRST to SGTIRST to PHT
UTC to GMTEST to GMTCST to GMTMST to GMTPST to GMTCET to GMTMSK to GMTGST to GMTPKT to GMTIST to GMTSGT to GMTPHT to GMT

Questions and answers

What is the time difference between IRST and GMT?

GMT is 3 hours 30 minutes behind IRST.

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

When it is 9:00 AM in IRST, it is 5:30 AM in GMT.

When is the best time to call GMT from IRST?

Both sides are at work from 12:30 PM – 6:00 PM in IRST (9:00 AM – 2:30 PM in GMT).

Does the time difference between IRST and GMT change?

No. The difference stays 3 hours 30 minutes all year.