IST to Reading 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 Reading 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). Reading Time (Reading time) is used in Reading, UK.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Reading Time time conversion table
IST to Reading Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Reading 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 | Reading 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 | Reading 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 Reading 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 Reading 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 Reading Time
Subtract 5 hours 30 minutes from the IST time to get Reading 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 Reading Time
The time difference between IST and Reading 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: Reading Time is 5 hours 30 minutes behind of IST.
- 29 Mar 2026 – 24 Oct 2026: Reading Time is 4 hours 30 minutes behind of IST.
- 25 Oct 2026 – 31 Dec 2026: Reading Time is 5 hours 30 minutes behind of IST.
IST and Reading Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Reading 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 Reading Time
IST and Reading 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 Reading Time FAQ
What is the time difference between IST and Reading 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 Reading Time?
9:00 AM IST is 3:30 AM GMT.
What is 12 PM (noon) IST in Reading Time?
12:00 PM IST is 6:30 AM GMT.
Is Reading Time ahead of or behind IST?
GMT is 5 hours 30 minutes behind IST, so it is earlier in Reading 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 Reading Time change for daylight saving time?
Yes. Reading 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 Reading Time?
IST and Reading 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 Reading Time to IST
Convert IST to other time zones
Convert other time zones to Reading Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.