BST to Chennai Time Converter
IST is 5 hours 30 minutes ahead of GMT. 9:00 AM GMT = 2:30 PM IST.
IST is 5 hours 30 minutes ahead of GMT at the moment. To convert BST to Chennai Time, add 5 hours 30 minutes to the BST time: 9:00 AM GMT = 2:30 PM IST.
BST (British Time) is used in United Kingdom from late March to late October. Chennai Time (Chennai time) is used in Chennai, India.
BST here means British Summer Time, not Bangladesh Standard Time. BST (British Summer Time) is not in force right now: United Kingdom from late March to late October is currently on GMT. This page uses whichever name applies on the date you pick, so the numbers below say GMT.
BST to Chennai Time time conversion table
BST to Chennai Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| BST | Chennai Time | Day |
|---|---|---|
| 12:00 AM GMT | 5:30 AM IST | night |
| 1:00 AM GMT | 6:30 AM IST | — |
| 2:00 AM GMT | 7:30 AM IST | — |
| 3:00 AM GMT | 8:30 AM IST | — |
| 4:00 AM GMT | 9:30 AM IST | — |
| 5:00 AM GMT | 10:30 AM IST | — |
| 6:00 AM GMT | 11:30 AM IST | — |
| 7:00 AM GMT | 12:30 PM IST | — |
| 8:00 AM GMT | 1:30 PM IST | — |
| 9:00 AM GMT | 2:30 PM IST | work hours |
| 10:00 AM GMT | 3:30 PM IST | work hours |
| 11:00 AM GMT | 4:30 PM IST | work hours |
| 12:00 PM GMT | 5:30 PM IST | — |
| 1:00 PM GMT | 6:30 PM IST | — |
| 2:00 PM GMT | 7:30 PM IST | — |
| 3:00 PM GMT | 8:30 PM IST | — |
| 4:00 PM GMT | 9:30 PM IST | — |
| 5:00 PM GMT | 10:30 PM IST | night |
| 6:00 PM GMT | 11:30 PM IST | night |
| 7:00 PM GMT | 12:30 AM IST | next day |
| 8:00 PM GMT | 1:30 AM IST | next day |
| 9:00 PM GMT | 2:30 AM IST | next day |
| 10:00 PM GMT | 3:30 AM IST | next day |
| 11:00 PM GMT | 4:30 AM IST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert BST to Chennai Time
Add 5 hours 30 minutes to the BST time to get Chennai Time.
Example: 9:00 AM GMT = 2:30 PM IST.
Across midnight: 10:00 PM GMT = 3:30 AM IST (next day). The date changes, so always check the day as well as the hour.
Time difference between BST and Chennai Time
The time difference between BST and Chennai 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: Chennai Time is 5 hours 30 minutes ahead of BST.
- 29 Mar 2026 – 24 Oct 2026: Chennai Time is 4 hours 30 minutes ahead of BST.
- 25 Oct 2026 – 31 Dec 2026: Chennai Time is 5 hours 30 minutes ahead of BST.
BST and Chennai Time during daylight saving time
- BST next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- Chennai Time does not observe daylight saving time; it stays on UTC+5:30 all year.
Best time for a meeting between BST and Chennai Time
BST and Chennai Time share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:30 AM GMT lands between 2:30 PM and 5:00 PM IST, inside working hours for both.
BST to Chennai Time FAQ
What is the time difference between BST and Chennai Time?
Right now IST is 5 hours 30 minutes ahead of GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM BST in Chennai Time?
9:00 AM GMT is 2:30 PM IST.
What is 12 PM (noon) BST in Chennai Time?
12:00 PM GMT is 5:30 PM IST.
Is Chennai Time ahead of or behind BST?
IST is 5 hours 30 minutes ahead of GMT, so it is later in Chennai Time than in BST.
Does BST change for daylight saving time?
Yes. BST next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does Chennai Time change for daylight saving time?
No. Chennai Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between BST and Chennai Time?
BST and Chennai Time share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:30 AM GMT lands between 2:30 PM and 5:00 PM IST, inside working hours for both.
Related conversions
Convert Chennai Time to BST
Convert BST to other time zones
Convert other time zones to Chennai Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.