IST to Cardiff Time Converter
GMT is 5 hours 30 minutes behind IST. 9:00 AM IST = 3:30 AM GMT.
GMT is 5 hours 30 minutes behind IST at the moment. To convert IST to Cardiff Time, subtract 5 hours 30 minutes from the IST time: 9:00 AM IST = 3:30 AM GMT.
IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Cardiff Time (Cardiff time) is used in Cardiff, UK.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Cardiff Time time conversion table
IST to Cardiff Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Cardiff Time |
|---|---|
| 12:00 AM | 6:30 PM−1 |
| 1:00 AM | 7:30 PM−1 |
| 2:00 AM | 8:30 PM−1 |
| 3:00 AM | 9:30 PM−1 |
| 4:00 AM | 10:30 PM−1 |
| 5:00 AM | 11:30 PM−1 |
| 6:00 AM | 12:30 AM |
| 7:00 AM | 1:30 AM |
| IST | Cardiff Time |
|---|---|
| 8:00 AM | 2:30 AM |
| 9:00 AM | 3:30 AM |
| 10:00 AM | 4:30 AM |
| 11:00 AM | 5:30 AM |
| 12:00 PM | 6:30 AM |
| 1:00 PM | 7:30 AM |
| 2:00 PM | 8:30 AM |
| 3:00 PM | 9:30 AM |
| IST | Cardiff Time |
|---|---|
| 4:00 PM | 10:30 AM |
| 5:00 PM | 11:30 AM |
| 6:00 PM | 12:30 PM |
| 7:00 PM | 1:30 PM |
| 8:00 PM | 2:30 PM |
| 9:00 PM | 3:30 PM |
| 10:00 PM | 4:30 PM |
| 11:00 PM | 5:30 PM |
Conversion table from IST to Cardiff Time 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 Cardiff Time, −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 IST to Cardiff Time
Subtract 5 hours 30 minutes from the IST time to get Cardiff Time.
Example: 9:00 AM IST = 3:30 AM GMT.
Across midnight: 1:00 AM IST = 7:30 PM GMT (previous day). The date changes, so always check the day as well as the hour.
Time difference between IST and Cardiff Time
The time difference between IST and Cardiff Time 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: Cardiff Time is 5 hours 30 minutes behind of IST.
- 29 Mar 2026 – 24 Oct 2026: Cardiff Time is 4 hours 30 minutes behind of IST.
- 25 Oct 2026 – 31 Dec 2026: Cardiff Time is 5 hours 30 minutes behind of IST.
IST and Cardiff Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Cardiff Time next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
Best time for a meeting between IST and Cardiff Time
IST and Cardiff Time share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 2:30 PM and 5:00 PM IST lands between 9:00 AM and 11:30 AM GMT, inside working hours for both.
IST to Cardiff Time FAQ
What is the time difference between IST and Cardiff Time?
Right now GMT is 5 hours 30 minutes behind IST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM IST in Cardiff Time?
9:00 AM IST is 3:30 AM GMT.
What is 12 PM (noon) IST in Cardiff Time?
12:00 PM IST is 6:30 AM GMT.
Is Cardiff Time ahead of or behind IST?
GMT is 5 hours 30 minutes behind IST, so it is earlier in Cardiff Time than in IST.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
Does Cardiff Time change for daylight saving time?
Yes. Cardiff Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
What is the best time for a meeting between IST and Cardiff Time?
IST and Cardiff Time share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 2:30 PM and 5:00 PM IST lands between 9:00 AM and 11:30 AM GMT, inside working hours for both.
Related conversions
Convert Cardiff Time to IST
Convert IST to other time zones
Convert other time zones to Cardiff Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.