World Timezones

IRST to IST Converter

Compare IST to IRST instead
Iran Standard Time8:06 amFri, Jun 5
Iran Standard TimeIRST
Middle East · UTC+3:30
8:06 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
India Standard TimeIST
Asia · UTC+5:30
10:06 amFri, Jun 5
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a

Offset

The time difference between Iran Standard Time and India Standard Time is 2 hours.

2 hours

Iran Standard Time (IRST) is behind India Standard Time (IST).

IRST: UTC+3:30

IST: UTC+5:30

Neither Iran Standard Time nor India Standard Time is currently observing daylight saving time.

When to schedule

Business-hours overlap: 9 AM–3 PM in Iran Standard Time (11 AM–5 PM in India Standard Time).

Both teams are in working hours during this window on weekdays.

Suggested time: 12:00 PM Iran Standard Time (2:00 PM India Standard Time).

About these zones

Iran Standard Time is also known as IRST. To call Iran, dial +98.

India Standard Time is also known as IST. To call India, dial +91.

India Standard Time is approximately 1,750 miles southeast of Iran Standard Time.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

IRSTISTDay
12:00 am2:00 amSame day
1:00 am3:00 amSame day
2:00 am4:00 amSame day
3:00 am5:00 amSame day
4:00 am6:00 amSame day
5:00 am7:00 amSame day
6:00 am8:00 amSame day
7:00 am9:00 amSame day
8:00 am10:00 amSame day
9:00 am11:00 amSame day
10:00 am12:00 pmSame day
11:00 am1:00 pmSame day
12:00 pm2:00 pmSame day
1:00 pm3:00 pmSame day
2:00 pm4:00 pmSame day
3:00 pm5:00 pmSame day
4:00 pm6:00 pmSame day
5:00 pm7:00 pmSame day
6:00 pm8:00 pmSame day
7:00 pm9:00 pmSame day
8:00 pm10:00 pmSame day
9:00 pm11:00 pmSame day
10:00 pm12:00 am+1 day
11:00 pm1:00 am+1 day

Daylight saving time

Neither Iran Standard Time nor India Standard Time observes daylight saving time. The offset between these zones remains constant year-round.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Iran Standard Time
Sunrise
4:50 AM
Sunset
7:18 PM
Day length
14h 28m
India Standard Time
Sunrise
6:01 AM
Sunset
7:15 PM
Day length
13h 14m

Daylight overlap: 12h 25m — 4:50 AM–5:15 PM in Iran Standard Time (6:50 AM–7:15 PM in India Standard Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Iran Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Iran Standard Time

  • IKA
  • THR
  • MHD
  • IFN
  • PYK
  • TBZ

Airports in India Standard Time

  • BOM
  • NMI
  • DEL
  • BLR
  • HYD
  • AMD
  • MAA
  • CCU
  • STV
  • PNQ

Related conversions

Common conversions

What is 9:00 am IRST in IST?
9:00 am IRST is 11:00 am IST.
What is 12:00 pm IRST in IST?
12:00 pm IRST is 2:00 pm IST.
What is 12:30 pm IRST in IST?
12:30 pm IRST is 2:30 pm IST.
What is 2:00 pm IRST in IST?
2:00 pm IRST is 4:00 pm IST.
What is 5:00 pm IRST in IST?
5:00 pm IRST is 7:00 pm IST.
What is 11:30 pm IRST in IST?
11:30 pm IRST is 1:30 am IST, the next day.