IST to Windsor Time Converter
EST is 10 hours 30 minutes behind IST. 9:00 AM IST = 10:30 PM EST (previous day).
EST is 10 hours 30 minutes behind IST at the moment. To convert IST to Windsor Time, subtract 10 hours 30 minutes from the IST time: 9:00 AM IST = 10:30 PM EST (previous day).
IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Windsor Time (Windsor time) is used in Windsor, Canada.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Windsor Time time conversion table
IST to Windsor Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Windsor Time |
|---|---|
| 12:00 AM | 1:30 PM−1 |
| 1:00 AM | 2:30 PM−1 |
| 2:00 AM | 3:30 PM−1 |
| 3:00 AM | 4:30 PM−1 |
| 4:00 AM | 5:30 PM−1 |
| 5:00 AM | 6:30 PM−1 |
| 6:00 AM | 7:30 PM−1 |
| 7:00 AM | 8:30 PM−1 |
| IST | Windsor Time |
|---|---|
| 8:00 AM | 9:30 PM−1 |
| 9:00 AM | 10:30 PM−1 |
| 10:00 AM | 11:30 PM−1 |
| 11:00 AM | 12:30 AM |
| 12:00 PM | 1:30 AM |
| 1:00 PM | 2:30 AM |
| 2:00 PM | 3:30 AM |
| 3:00 PM | 4:30 AM |
| IST | Windsor Time |
|---|---|
| 4:00 PM | 5:30 AM |
| 5:00 PM | 6:30 AM |
| 6:00 PM | 7:30 AM |
| 7:00 PM | 8:30 AM |
| 8:00 PM | 9:30 AM |
| 9:00 PM | 10:30 AM |
| 10:00 PM | 11:30 AM |
| 11:00 PM | 12:30 PM |
Conversion table from IST to Windsor 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 Windsor 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 Windsor Time
Subtract 10 hours 30 minutes from the IST time to get Windsor Time.
Example: 9:00 AM IST = 10:30 PM EST (previous day).
Across midnight: 1:00 AM IST = 2:30 PM EST (previous day). The date changes, so always check the day as well as the hour.
Time difference between IST and Windsor Time
The time difference between IST and Windsor 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 – 7 Mar 2026: Windsor Time is 10 hours 30 minutes behind of IST.
- 8 Mar 2026 – 31 Oct 2026: Windsor Time is 9 hours 30 minutes behind of IST.
- 1 Nov 2026 – 31 Dec 2026: Windsor Time is 10 hours 30 minutes behind of IST.
IST and Windsor Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Windsor Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
Best time for a meeting between IST and Windsor Time
IST and Windsor Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM IST, which is 8:30 PM EST.
IST to Windsor Time FAQ
What is the time difference between IST and Windsor Time?
Right now EST is 10 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 Windsor Time?
9:00 AM IST is 10:30 PM EST (previous day).
What is 12 PM (noon) IST in Windsor Time?
12:00 PM IST is 1:30 AM EST.
Is Windsor Time ahead of or behind IST?
EST is 10 hours 30 minutes behind IST, so it is earlier in Windsor 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 Windsor Time change for daylight saving time?
Yes. Windsor Time next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
What is the best time for a meeting between IST and Windsor Time?
IST and Windsor Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM IST, which is 8:30 PM EST.
Related conversions
Convert Windsor Time to IST
Convert IST to other time zones
Convert other time zones to Windsor Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.