Offset
The time difference between Ottawa and Tokyo is 13 hours.
Ottawa (EDT) is behind Tokyo (JST).
EDT: UTC-4
JST: UTC+9
Ottawa is currently observing daylight saving time; Tokyo is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Ottawa and Tokyo don't overlap on the same weekday. Tokyo is 13 hours ahead of Ottawa.
With some flexibility, there’s a workable window outside standard hours:
- 6 PM–8 PM in Ottawa (7 AM–9 AM the next day in Tokyo) — suggest 7:00 PM Ottawa (8:00 AM Tokyo).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Canada
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Victoria DayMon, May 18
- Canada DayWed, Jul 1
- Labour DayMon, Sep 7
- National Day for Truth and ReconciliationWed, Sep 30
- ThanksgivingMon, Oct 12
- Christmas DayFri, Dec 25
Japan
- New Year's DayThu, Jan 1
- Coming of Age DayMon, Jan 12
- Foundation DayWed, Feb 11
- The Emperor's BirthdayMon, Feb 23
- Vernal Equinox DayFri, Mar 20
- Shōwa DayWed, Apr 29
- Constitution Memorial DayWed, May 6
- Greenery DayMon, May 4
- Children's DayTue, May 5
- Marine DayMon, Jul 20
- Mountain DayTue, Aug 11
- Respect for the Aged DayMon, Sep 21
- Autumnal Equinox DayWed, Sep 23
- Sports DayMon, Oct 12
- Culture DayTue, Nov 3
- Labour Thanksgiving DayMon, Nov 23
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Ottawa | Tokyo | Day |
|---|---|---|
| 12:00 am | 1:00 pm | Same day |
| 1:00 am | 2:00 pm | Same day |
| 2:00 am | 3:00 pm | Same day |
| 3:00 am | 4:00 pm | Same day |
| 4:00 am | 5:00 pm | Same day |
| 5:00 am | 6:00 pm | Same day |
| 6:00 am | 7:00 pm | Same day |
| 7:00 am | 8:00 pm | Same day |
| 8:00 am | 9:00 pm | Same day |
| 9:00 am | 10:00 pm | Same day |
| 10:00 am | 11:00 pm | Same day |
| 11:00 am | 12:00 am | +1 day |
| 12:00 pm | 1:00 am | +1 day |
| 1:00 pm | 2:00 am | +1 day |
| 2:00 pm | 3:00 am | +1 day |
| 3:00 pm | 4:00 am | +1 day |
| 4:00 pm | 5:00 am | +1 day |
| 5:00 pm | 6:00 am | +1 day |
| 6:00 pm | 7:00 am | +1 day |
| 7:00 pm | 8:00 am | +1 day |
| 8:00 pm | 9:00 am | +1 day |
| 9:00 pm | 10:00 am | +1 day |
| 10:00 pm | 11:00 am | +1 day |
| 11:00 pm | 12:00 pm | +1 day |
Daylight saving time
Ottawa observes daylight saving time; Tokyo does not. The offset between the two zones changes when Ottawa transitions: on Sunday, November 1, 2026, clocks fall back from EDT to EST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:16 AM
- Sunset
- 8:49 PM
- Day length
- 15h 33m
- Sunrise
- 4:26 AM
- Sunset
- 6:56 PM
- Day length
- 14h 30m
Daylight overlap: 5h 23m — 3:26 PM–8:49 PM in Ottawa (4:26 AM–9:49 AM in Tokyo). Both locations are in daylight during this window.
Cities in these zones
Other cities in Eastern Time
Other cities in Japan Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Eastern Time
- YTZ
- YYZ
- YHU
- YMX
- YUL
- YND
- YOW
- YRO
Airports in Japan Standard Time
- HND
- NRT
- ITM
- KIX
- UKB
- NGO
- NKM
- CTS
- OKD
- FUK
Related conversions
Common conversions
- What is 9:00 am Ottawa in Tokyo?
- 9:00 am Ottawa is 10:00 pm Tokyo.
- What is 12:00 pm Ottawa in Tokyo?
- 12:00 pm Ottawa is 1:00 am Tokyo, the next day.
- What is 12:30 pm Ottawa in Tokyo?
- 12:30 pm Ottawa is 1:30 am Tokyo, the next day.
- What is 2:00 pm Ottawa in Tokyo?
- 2:00 pm Ottawa is 3:00 am Tokyo, the next day.
- What is 5:00 pm Ottawa in Tokyo?
- 5:00 pm Ottawa is 6:00 am Tokyo, the next day.
- What is 11:30 pm Ottawa in Tokyo?
- 11:30 pm Ottawa is 12:30 pm Tokyo, the next day.