World Timezones

AST to IRST Converter

Compare IRST to AST instead
Arabia Standard Time7:36 amFri, Jun 5
Arabia Standard TimeAST
Middle East · UTC+3
7:36 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
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p

Offset

The time difference between Arabia Standard Time and Iran Standard Time is 0.5 hours.

0.5 hours

Arabia Standard Time (AST) is behind Iran Standard Time (IRST).

AST: UTC+3

IRST: UTC+3:30

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

When to schedule

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

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

Suggested time: 1:00 PM Arabia Standard Time (1:30 PM Iran Standard Time).

Note: the working week in Saudi Arabia runs Sunday–Thursday; Friday–Saturday is the weekend, so overlap on those days is limited.

About these zones

Arabia Standard Time is also known as AST. To call Saudi Arabia, dial +966.

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

Iran Standard Time is approximately 800 miles north of Arabia Standard Time.

Quick reference

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

ASTIRSTDay
12:00 am12:30 amSame day
1:00 am1:30 amSame day
2:00 am2:30 amSame day
3:00 am3:30 amSame day
4:00 am4:30 amSame day
5:00 am5:30 amSame day
6:00 am6:30 amSame day
7:00 am7:30 amSame day
8:00 am8:30 amSame day
9:00 am9:30 amSame day
10:00 am10:30 amSame day
11:00 am11:30 amSame day
12:00 pm12:30 pmSame day
1:00 pm1:30 pmSame day
2:00 pm2:30 pmSame day
3:00 pm3:30 pmSame day
4:00 pm4:30 pmSame day
5:00 pm5:30 pmSame day
6:00 pm6:30 pmSame day
7:00 pm7:30 pmSame day
8:00 pm8:30 pmSame day
9:00 pm9:30 pmSame day
10:00 pm10:30 pmSame day
11:00 pm11:30 pmSame day

Daylight saving time

Neither Arabia 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

Arabia Standard Time
Sunrise
5:05 AM
Sunset
6:41 PM
Day length
13h 36m
Iran Standard Time
Sunrise
4:50 AM
Sunset
7:18 PM
Day length
14h 28m

Daylight overlap: 13h 36m — 5:05 AM–6:41 PM in Arabia Standard Time (5:35 AM–7:11 PM in Iran Standard Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Arabia Standard Time

Cities in Iran Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Arabia Standard Time

  • JED
  • RUH
  • MED
  • DMM

Airports in Iran Standard Time

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

Related conversions

Common conversions

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