World Timezones

CET to IRST Converter

Compare IRST to CET instead
Central European Time6:35 amFri, Jun 5
Central European TimeCEST
Europe · UTC+2
6:35 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
8:05 amFri, Jun 5
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a

Offset

The time difference between Central European Time and Iran Standard Time is 1.5 hours.

1.5 hours

Central European Time (CEST) is behind Iran Standard Time (IRST).

CEST: UTC+2

IRST: UTC+3:30

Central European Time is currently observing daylight saving time; Iran Standard Time is not.

When to schedule

Business-hours overlap: 9 AM–4 PM in Central European Time (10 AM–5 PM in Iran Standard Time).

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

Suggested time: 12:00 PM Central European Time (1:30 PM Iran Standard Time).

This window may shift by an hour during daylight saving time.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

France

  • New Year's DayThu, Jan 1
  • Easter MondayMon, Apr 6
  • Labour DayFri, May 1
  • Victory in Europe DayFri, May 8
  • Ascension DayThu, May 14
  • Whit MondayMon, May 25
  • Bastille DayTue, Jul 14
  • Assumption DaySat, Aug 15
  • All Saints' DaySun, Nov 1
  • Armistice DayWed, Nov 11
  • Christmas DayFri, Dec 25

About these zones

Central European Time is also known as CET, or CEST. To call France, dial +33.

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

Iran Standard Time is approximately 2,600 miles east of Central European Time.

Quick reference

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

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

Daylight saving time

Central European Time observes daylight saving time; Iran Standard Time does not. The offset between the two zones changes when Central European Time transitions: on Sunday, October 25, 2026, clocks fall back from CEST to CET.

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

Daylight today

Central European Time
Sunrise
5:50 AM
Sunset
9:50 PM
Day length
15h 59m
Iran Standard Time
Sunrise
4:50 AM
Sunset
7:18 PM
Day length
14h 28m

Daylight overlap: 11h 57m — 5:50 AM–5:48 PM in Central European Time (7:20 AM–7:18 PM in Iran Standard Time). Both locations are in daylight during this window.

Cities in these zones

Cities in Central European Time

Cities in Iran Standard Time

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Central European Time

  • CDG
  • LBG
  • ORY
  • MRS
  • GNB
  • LYS
  • NCE

Airports in Iran Standard Time

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

Related conversions

Common conversions

What is 9:00 am CET in IRST?
9:00 am CET is 10:30 am IRST.
What is 12:00 pm CET in IRST?
12:00 pm CET is 1:30 pm IRST.
What is 12:30 pm CET in IRST?
12:30 pm CET is 2:00 pm IRST.
What is 2:00 pm CET in IRST?
2:00 pm CET is 3:30 pm IRST.
What is 5:00 pm CET in IRST?
5:00 pm CET is 6:30 pm IRST.
What is 11:30 pm CET in IRST?
11:30 pm CET is 1:00 am IRST, the next day.