Bonn Time to IST Converter
IST is 4 hours 30 minutes ahead of CET. 9:00 AM CET = 1:30 PM IST.
IST is 4 hours 30 minutes ahead of CET at the moment. To convert Bonn Time to IST, add 4 hours 30 minutes to the Bonn Time time: 9:00 AM CET = 1:30 PM IST.
Bonn Time (Bonn time) is used in Bonn, Germany. IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time).
IST here means India Standard Time, not Irish or Israel Standard Time.
Bonn Time to IST time conversion table
Bonn Time to IST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Bonn Time | IST |
|---|---|
| 12:00 AM | 4:30 AM |
| 1:00 AM | 5:30 AM |
| 2:00 AM | 6:30 AM |
| 3:00 AM | 7:30 AM |
| 4:00 AM | 8:30 AM |
| 5:00 AM | 9:30 AM |
| 6:00 AM | 10:30 AM |
| 7:00 AM | 11:30 AM |
| Bonn Time | IST |
|---|---|
| 8:00 AM | 12:30 PM |
| 9:00 AM | 1:30 PM |
| 10:00 AM | 2:30 PM |
| 11:00 AM | 3:30 PM |
| 12:00 PM | 4:30 PM |
| 1:00 PM | 5:30 PM |
| 2:00 PM | 6:30 PM |
| 3:00 PM | 7:30 PM |
| Bonn Time | IST |
|---|---|
| 4:00 PM | 8:30 PM |
| 5:00 PM | 9:30 PM |
| 6:00 PM | 10:30 PM |
| 7:00 PM | 11:30 PM |
| 8:00 PM | 12:30 AM+1 |
| 9:00 PM | 1:30 AM+1 |
| 10:00 PM | 2:30 AM+1 |
| 11:00 PM | 3:30 AM+1 |
Conversion table from Bonn Time to IST for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in IST, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert Bonn Time to IST
Add 4 hours 30 minutes to the Bonn Time time to get IST.
Example: 9:00 AM CET = 1:30 PM IST.
Across midnight: 10:00 PM CET = 2:30 AM IST (next day). The date changes, so always check the day as well as the hour.
Time difference between Bonn Time and IST
The time difference between Bonn Time and IST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 28 Mar 2026: IST is 4 hours 30 minutes ahead of Bonn Time.
- 29 Mar 2026 – 24 Oct 2026: IST is 3 hours 30 minutes ahead of Bonn Time.
- 25 Oct 2026 – 31 Dec 2026: IST is 4 hours 30 minutes ahead of Bonn Time.
Bonn Time and IST during daylight saving time
- Bonn Time next changes on 28 Mar 2027: clocks go forward one hour at 01:59 local time, from CET (UTC+1) to CEST (UTC+2).
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
Best time for a meeting between Bonn Time and IST
Bonn Time and IST share 3 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 12:30 PM CET lands between 1:30 PM and 5:00 PM IST, inside working hours for both.
Bonn Time to IST FAQ
What is the time difference between Bonn Time and IST?
Right now IST is 4 hours 30 minutes ahead of CET. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Bonn Time in IST?
9:00 AM CET is 1:30 PM IST.
What is 12 PM (noon) Bonn Time in IST?
12:00 PM CET is 4:30 PM IST.
Is IST ahead of or behind Bonn Time?
IST is 4 hours 30 minutes ahead of CET, so it is later in IST than in Bonn Time.
Does Bonn Time change for daylight saving time?
Yes. Bonn Time next changes on 28 Mar 2027, when clocks go forward one hour from CET to CEST.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between Bonn Time and IST?
Bonn Time and IST share 3 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 12:30 PM CET lands between 1:30 PM and 5:00 PM IST, inside working hours for both.
Related conversions
Convert IST to Bonn Time
Convert Bonn Time to other time zones
Convert other time zones to IST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.