World Timezones

IST to IRST Converter

Compare IRST to IST instead
India Standard Time10:06 amFri, Jun 5
India Standard TimeIST
Asia · UTC+5:30
10:06 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
Iran Standard TimeIRST
Middle East · UTC+3:30
8:06 amFri, Jun 5
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p

Offset

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

2 hours

India Standard Time (IST) is ahead of Iran Standard Time (IRST).

IST: UTC+5:30

IRST: UTC+3:30

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

When to schedule

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

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

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

About these zones

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

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

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

Quick reference

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

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

Daylight saving time

Neither India Standard Time nor Iran 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

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

Daylight overlap: 12h 25m — 6:50 AM–7:15 PM in India Standard Time (4:50 AM–5:15 PM in Iran 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 India Standard Time

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

Airports in Iran Standard Time

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

Related conversions

Common conversions

What is 9:00 am IST in IRST?
9:00 am IST is 7:00 am IRST.
What is 12:00 pm IST in IRST?
12:00 pm IST is 10:00 am IRST.
What is 12:30 pm IST in IRST?
12:30 pm IST is 10:30 am IRST.
What is 2:00 pm IST in IRST?
2:00 pm IST is 12:00 pm IRST.
What is 5:00 pm IST in IRST?
5:00 pm IST is 3:00 pm IRST.
What is 11:30 pm IST in IRST?
11:30 pm IST is 9:30 pm IRST.