Ottawa Time to IST Converter
IST is 10 hours 30 minutes ahead of EST. 9:00 AM EST = 7:30 PM IST.
IST is 10 hours 30 minutes ahead of EST at the moment. To convert Ottawa Time to IST, add 10 hours 30 minutes to the Ottawa Time time: 9:00 AM EST = 7:30 PM IST.
Ottawa Time (Ottawa time) is used in Ottawa, Canada. 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.
Ottawa Time to IST time conversion table
Ottawa Time to IST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Ottawa Time | IST |
|---|---|
| 12:00 AM | 10:30 AM |
| 1:00 AM | 11:30 AM |
| 2:00 AM | 12:30 PM |
| 3:00 AM | 1:30 PM |
| 4:00 AM | 2:30 PM |
| 5:00 AM | 3:30 PM |
| 6:00 AM | 4:30 PM |
| 7:00 AM | 5:30 PM |
| Ottawa Time | IST |
|---|---|
| 8:00 AM | 6:30 PM |
| 9:00 AM | 7:30 PM |
| 10:00 AM | 8:30 PM |
| 11:00 AM | 9:30 PM |
| 12:00 PM | 10:30 PM |
| 1:00 PM | 11:30 PM |
| 2:00 PM | 12:30 AM+1 |
| 3:00 PM | 1:30 AM+1 |
| Ottawa Time | IST |
|---|---|
| 4:00 PM | 2:30 AM+1 |
| 5:00 PM | 3:30 AM+1 |
| 6:00 PM | 4:30 AM+1 |
| 7:00 PM | 5:30 AM+1 |
| 8:00 PM | 6:30 AM+1 |
| 9:00 PM | 7:30 AM+1 |
| 10:00 PM | 8:30 AM+1 |
| 11:00 PM | 9:30 AM+1 |
Conversion table from Ottawa 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 Ottawa Time to IST
Add 10 hours 30 minutes to the Ottawa Time time to get IST.
Example: 9:00 AM EST = 7:30 PM IST.
Across midnight: 10:00 PM EST = 8:30 AM IST (next day). The date changes, so always check the day as well as the hour.
Time difference between Ottawa Time and IST
The time difference between Ottawa 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:
- 31 Dec 2025 – 7 Mar 2026: IST is 10 hours 30 minutes ahead of Ottawa Time.
- 8 Mar 2026 – 31 Oct 2026: IST is 9 hours 30 minutes ahead of Ottawa Time.
- 1 Nov 2026 – 30 Dec 2026: IST is 10 hours 30 minutes ahead of Ottawa Time.
Ottawa Time and IST during daylight saving time
- Ottawa 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).
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
Best time for a meeting between Ottawa Time and IST
Ottawa Time and IST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM EST, which is 5:30 PM IST.
Ottawa Time to IST FAQ
What is the time difference between Ottawa Time and IST?
Right now IST is 10 hours 30 minutes ahead of EST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Ottawa Time in IST?
9:00 AM EST is 7:30 PM IST.
What is 12 PM (noon) Ottawa Time in IST?
12:00 PM EST is 10:30 PM IST.
Is IST ahead of or behind Ottawa Time?
IST is 10 hours 30 minutes ahead of EST, so it is later in IST than in Ottawa Time.
Does Ottawa Time change for daylight saving time?
Yes. Ottawa Time next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
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 Ottawa Time and IST?
Ottawa Time and IST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM EST, which is 5:30 PM IST.
Related conversions
Convert IST to Ottawa Time
Convert Ottawa Time to other time zones
Convert other time zones to IST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.