Ottawa to Calgary: time difference
Calgary is 2 h behind Ottawa. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Ottawa 00:54 12:54 AM Calgary 22:54 10:54 PM You –:–
00:54 12:54 AM
Eastern Daylight Time · UTC-4
☀️ 07:12 · 🌙 18:30
22:54 10:54 PM
Mountain Daylight Time · UTC-6
☀️ 07:50 · 🌙 18:58
·
−2 h
Calgary is 2 h behind Ottawa.
When you, Ottawa and Calgary are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Ottawa
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇨🇦 Calgary
22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Ottawa | 🇨🇦 Calgary |
|---|---|---|
| Local time | 00:54 | 22:54 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 2026 |
| Time zone | Eastern Daylight Time | Mountain Daylight Time |
| UTC offset | UTC-4 | UTC-6 |
| Offset from Ottawa | — | −2 h |
| IANA zone | America/Toronto | America/Edmonton |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 07:12 | 07:50 |
| Sunset | 18:30 | 18:58 |
| Daylight | 11 h 18 min | 11 h 8 min |
| People on this clock | 1,000,000 | 1,267,344 |
Compare Ottawa with another city
More comparisons with Ottawa: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Ottawa and Calgary: common questions
How many hours behind Ottawa is Calgary?
The clocks in Calgary are 2 hours behind those in Ottawa (UTC−6 and UTC−4).
What time is it in Calgary at the start of the working day in Ottawa?
The working day in Ottawa starts at 9:00 AM; in Calgary it is 7:00 AM at that moment.
What time is it in Calgary at the end of the working day in Ottawa?
The working day in Ottawa ends at 6:00 PM; in Calgary it is 4:00 PM at that moment.
When do working hours in Ottawa and in Calgary overlap?
Working hours (9:00 AM–6:00 PM) overlap from 11:00 AM to 6:00 PM in Ottawa, which is 9:00 AM to 4:00 PM in Calgary.
Until what time in Ottawa is it still yesterday in Calgary?
Before 2:00 AM in Ottawa, the date in Calgary has not changed yet. From 10:00 PM in Calgary, it is already the next day in Ottawa.
Does the time gap between Ottawa and Calgary change during the year?
Yes – daylight saving time is used in Ottawa but not in Calgary. From November 1, 2026, Calgary will be 1 hour behind Ottawa.
