Portsmouth Time to IST 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 Portsmouth Time to IST, add 5 hours 30 minutes to the Portsmouth Time time: 9:00 AM GMT = 2:30 PM IST.
Portsmouth Time (Portsmouth time) is used in Portsmouth, UK. 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.
Portsmouth Time to IST time conversion table
Portsmouth Time to IST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Portsmouth Time | IST |
|---|---|
| 12:00 AM | 5:30 AM |
| 1:00 AM | 6:30 AM |
| 2:00 AM | 7:30 AM |
| 3:00 AM | 8:30 AM |
| 4:00 AM | 9:30 AM |
| 5:00 AM | 10:30 AM |
| 6:00 AM | 11:30 AM |
| 7:00 AM | 12:30 PM |
| Portsmouth Time | IST |
|---|---|
| 8:00 AM | 1:30 PM |
| 9:00 AM | 2:30 PM |
| 10:00 AM | 3:30 PM |
| 11:00 AM | 4:30 PM |
| 12:00 PM | 5:30 PM |
| 1:00 PM | 6:30 PM |
| 2:00 PM | 7:30 PM |
| 3:00 PM | 8:30 PM |
| Portsmouth Time | IST |
|---|---|
| 4:00 PM | 9:30 PM |
| 5:00 PM | 10:30 PM |
| 6:00 PM | 11:30 PM |
| 7:00 PM | 12:30 AM+1 |
| 8:00 PM | 1:30 AM+1 |
| 9:00 PM | 2:30 AM+1 |
| 10:00 PM | 3:30 AM+1 |
| 11:00 PM | 4:30 AM+1 |
Conversion table from Portsmouth 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 Portsmouth Time to IST
Add 5 hours 30 minutes to the Portsmouth Time time to get IST.
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 Portsmouth Time and IST
The time difference between Portsmouth 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 5 hours 30 minutes ahead of Portsmouth Time.
- 29 Mar 2026 – 24 Oct 2026: IST is 4 hours 30 minutes ahead of Portsmouth Time.
- 25 Oct 2026 – 31 Dec 2026: IST is 5 hours 30 minutes ahead of Portsmouth Time.
Portsmouth Time and IST during daylight saving time
- Portsmouth 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).
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
Best time for a meeting between Portsmouth Time and IST
Portsmouth Time and IST 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.
Portsmouth Time to IST FAQ
What is the time difference between Portsmouth Time and IST?
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 Portsmouth Time in IST?
9:00 AM GMT is 2:30 PM IST.
What is 12 PM (noon) Portsmouth Time in IST?
12:00 PM GMT is 5:30 PM IST.
Is IST ahead of or behind Portsmouth Time?
IST is 5 hours 30 minutes ahead of GMT, so it is later in IST than in Portsmouth Time.
Does Portsmouth Time change for daylight saving time?
Yes. Portsmouth Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
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 Portsmouth Time and IST?
Portsmouth Time and IST 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 IST to Portsmouth Time
Convert Portsmouth Time to other time zones
Convert other time zones to IST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.