IST to CET: IST is 3 hours 30 minutes ahead of CET
India Standard Time is 3 hours 30 minutes ahead of Central European Time right now. It is 3:37 am IST in India and 12:07 am CEST in Central European.
Convert a specific time from IST to CET
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between IST and CET?
Central European Time is 3 hours 30 minutes behind India Standard Time. To go from IST to CET you subtract 3 hours 30 minutes. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from 3 hours 30 minutes to 4 hours 30 minutes, because Central European moves its clocks and India does not. This page recomputes it rather than assuming.
IST to CET conversion table
Every hour of Friday, September 25, 2026 in India, with the matching reading in Central European. 4 of the 24 hours land on a different calendar date in Central European, which is the part people get wrong when they schedule across this pair.
| IST | IST 24h | CET | CET 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 8:30 pm | 20:30 | the previous day |
| 1:00 am | 01:00 | 9:30 pm | 21:30 | the previous day |
| 2:00 am | 02:00 | 10:30 pm | 22:30 | the previous day |
| 3:00 am | 03:00 | 11:30 pm | 23:30 | the previous day |
| 4:00 am | 04:00 | 12:30 am | 00:30 | same day |
| 5:00 am | 05:00 | 1:30 am | 01:30 | same day |
| 6:00 am | 06:00 | 2:30 am | 02:30 | same day |
| 7:00 am | 07:00 | 3:30 am | 03:30 | same day |
| 8:00 am | 08:00 | 4:30 am | 04:30 | same day |
| 9:00 am | 09:00 | 5:30 am | 05:30 | same day |
| 10:00 am | 10:00 | 6:30 am | 06:30 | same day |
| 11:00 am | 11:00 | 7:30 am | 07:30 | same day |
| 12:00 pm | 12:00 | 8:30 am | 08:30 | same day |
| 1:00 pm | 13:00 | 9:30 am | 09:30 | same day |
| 2:00 pm | 14:00 | 10:30 am | 10:30 | same day |
| 3:00 pm | 15:00 | 11:30 am | 11:30 | same day |
| 4:00 pm | 16:00 | 12:30 pm | 12:30 | same day |
| 5:00 pm | 17:00 | 1:30 pm | 13:30 | same day |
| 6:00 pm | 18:00 | 2:30 pm | 14:30 | same day |
| 7:00 pm | 19:00 | 3:30 pm | 15:30 | same day |
| 8:00 pm | 20:00 | 4:30 pm | 16:30 | same day |
| 9:00 pm | 21:00 | 5:30 pm | 17:30 | same day |
| 10:00 pm | 22:00 | 6:30 pm | 18:30 | same day |
| 11:00 pm | 23:00 | 7:30 pm | 19:30 | same day |
What are the best hours to schedule a call between IST and CET?
4 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 1:00 pm IST to 5:00 pm IST. In Central European that window reads 9:30 am to 1:30 pm. Outside it, one side is either not yet at their desk or already gone.
| IST | CET | Working hours | Note |
|---|---|---|---|
| 1:00 pm | 9:30 am | both sides | afternoon in India, mid morning in Central European |
| 2:00 pm | 10:30 am | both sides | afternoon in India, mid morning in Central European |
| 3:00 pm | 11:30 am | both sides | afternoon in India, mid morning in Central European |
| 4:00 pm | 12:30 pm | both sides | afternoon in India, noon in Central European |
Does daylight saving change IST to CET?
India Standard Time does not move its clocks at all, so its UTC+5:30 offset holds every day of the year.
Central European Time is currently on CEST and changes next on Sunday, October 25, 2026, when the clock falls back from 2:59 am to 2:00 am and the offset moves from UTC+2 to UTC+1.
Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is 3 hours 30 minutes and for the rest it is 4 hours 30 minutes. The table above is built for today, not for an average day.
Is IST ahead of or behind CET?
IST is ahead of CET by 3 hours 30 minutes: when it is 12:00 pm in India, it is 8:30 am in Central European. One wrinkle worth knowing: CET and CEST are two names for the same zone, not two zones. Central European Time reads CET in winter and CEST in summer. When somebody types "ist to cet" they nearly always mean the zone rather than the literal winter offset, so this page resolves IST to Asia/Kolkata and CET to Europe/Paris and applies whichever offset is genuinely in force on the day.
India Standard Time covers the whole of India on a single half hour offset. Central European Time covers Paris, Berlin, Madrid, Rome and Amsterdam. The identifiers behind them are Asia/Kolkata and Europe/Paris, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is IST in CET?
- IST is 3 hours 30 minutes ahead of CET. 9:00 am IST is 5:30 am CET.
- How many hours ahead is CET of IST?
- CET is 3 hours 30 minutes behind IST. That varies across the year, between 3 hours 30 minutes and 4 hours 30 minutes.
- What time is it in Central European right now?
- 12:07 am CEST on Friday, September 25, 2026.
- When can India and Central European meet during working hours?
- Between 1:00 pm and 5:00 pm IST, which is 9:30 am to 1:30 pm CET.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so IST and CEST are the abbreviations genuinely in force today rather than a fixed assumption.
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