Ottawa Time to JST Converter
JST is 14 hours ahead of EST. 9:00 AM EST = 11:00 PM JST.
JST is 14 hours ahead of EST at the moment. To convert Ottawa Time to JST, add 14 hours to the Ottawa Time time: 9:00 AM EST = 11:00 PM JST.
Ottawa Time (Ottawa time) is used in Ottawa, Canada. JST (Japan Time) is used in Japan.
Ottawa Time to JST time conversion table
Ottawa Time to JST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Ottawa Time | JST | Day |
|---|---|---|
| 12:00 AM EST | 2:00 PM JST | — |
| 1:00 AM EST | 3:00 PM JST | — |
| 2:00 AM EST | 4:00 PM JST | — |
| 3:00 AM EST | 5:00 PM JST | — |
| 4:00 AM EST | 6:00 PM JST | — |
| 5:00 AM EST | 7:00 PM JST | — |
| 6:00 AM EST | 8:00 PM JST | — |
| 7:00 AM EST | 9:00 PM JST | — |
| 8:00 AM EST | 10:00 PM JST | night |
| 9:00 AM EST | 11:00 PM JST | night |
| 10:00 AM EST | 12:00 AM JST | next day |
| 11:00 AM EST | 1:00 AM JST | next day |
| 12:00 PM EST | 2:00 AM JST | next day |
| 1:00 PM EST | 3:00 AM JST | next day |
| 2:00 PM EST | 4:00 AM JST | next day |
| 3:00 PM EST | 5:00 AM JST | next day |
| 4:00 PM EST | 6:00 AM JST | next day |
| 5:00 PM EST | 7:00 AM JST | next day |
| 6:00 PM EST | 8:00 AM JST | next day |
| 7:00 PM EST | 9:00 AM JST | next day |
| 8:00 PM EST | 10:00 AM JST | next day |
| 9:00 PM EST | 11:00 AM JST | next day |
| 10:00 PM EST | 12:00 PM JST | next day |
| 11:00 PM EST | 1:00 PM JST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Ottawa Time to JST
Add 14 hours to the Ottawa Time time to get JST.
Example: 9:00 AM EST = 11:00 PM JST.
Across midnight: 10:00 PM EST = 12:00 PM JST (next day). The date changes, so always check the day as well as the hour.
Time difference between Ottawa Time and JST
The time difference between Ottawa Time and JST 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: JST is 14 hours ahead of Ottawa Time.
- 8 Mar 2026 – 31 Oct 2026: JST is 13 hours ahead of Ottawa Time.
- 1 Nov 2026 – 30 Dec 2026: JST is 14 hours ahead of Ottawa Time.
Ottawa Time and JST 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).
- JST does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between Ottawa Time and JST
Ottawa Time and JST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM EST, which is 9:00 PM JST.
Ottawa Time to JST FAQ
What is the time difference between Ottawa Time and JST?
Right now JST is 14 hours 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 JST?
9:00 AM EST is 11:00 PM JST.
What is 12 PM (noon) Ottawa Time in JST?
12:00 PM EST is 2:00 AM JST (next day).
Is JST ahead of or behind Ottawa Time?
JST is 14 hours ahead of EST, so it is later in JST 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 JST change for daylight saving time?
No. JST 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 JST?
Ottawa Time and JST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM EST, which is 9:00 PM JST.
Related conversions
Convert JST to Ottawa Time
Convert Ottawa Time to other time zones
Convert other time zones to JST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.