IRST to CET/CEST time converter
CET/CEST is 1 hour 30 minutes behind IRST. When it is 9:00 AM in IRST, it is 7:30 AM in CET/CEST.
12:15 AM in IRST, Sunday, October 18, 2026
Shared working hours (9:00–18:00)
IRST to CET/CEST conversion table
Every hour of today in IRST and the matching time in CET/CEST. Light rows are typical working hours (9:00–18:00).
| IRST | CET/CEST |
|---|---|
| 12:00 AM | 10:30 PM−1 day |
| 1:00 AM | 11:30 PM−1 day |
| 2:00 AM | 12:30 AM |
| 3:00 AM | 1:30 AM |
| 4:00 AM | 2:30 AM |
| 5:00 AM | 3:30 AM |
| 6:00 AM | 4:30 AM |
| 7:00 AM | 5:30 AM |
| 8:00 AM | 6:30 AM |
| 9:00 AM | 7:30 AM |
| 10:00 AM | 8:30 AM |
| 11:00 AM | 9:30 AM |
| 12:00 PM | 10:30 AM |
| 1:00 PM | 11:30 AM |
| 2:00 PM | 12:30 PM |
| 3:00 PM | 1:30 PM |
| 4:00 PM | 2:30 PM |
| 5:00 PM | 3:30 PM |
| 6:00 PM | 4:30 PM |
| 7:00 PM | 5:30 PM |
| 8:00 PM | 6:30 PM |
| 9:00 PM | 7:30 PM |
| 10:00 PM | 8:30 PM |
| 11:00 PM | 9:30 PM |
Best time to call or meet
Both sides are at work from 10:30 AM – 6:00 PM in IRST (9:00 AM – 4:30 PM in CET/CEST).
Daylight saving time and the difference
The difference changes during the year because IRST and CET/CEST switch clocks on different dates:
- Oct 18, 2026 – Oct 25, 2026: -1h 30m
- Oct 25, 2026 – Mar 28, 2027: -2h 30m
- Mar 28, 2027 – Oct 18, 2027: -1h 30m
More conversions
Questions and answers
What is the time difference between IRST and CET/CEST?
CET/CEST is 1 hour 30 minutes behind IRST.
What time is it in CET/CEST when it is 9 AM in IRST?
When it is 9:00 AM in IRST, it is 7:30 AM in CET/CEST.
When is the best time to call CET/CEST from IRST?
Both sides are at work from 10:30 AM – 6:00 PM in IRST (9:00 AM – 4:30 PM in CET/CEST).
Does the time difference between IRST and CET/CEST change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.