Calgary to Ottawa: time difference
Ottawa is 2 h ahead of Calgary. 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.
Calgary 01:28 1:28 AM Ottawa 03:28 3:28 AM You –:–
01:28 1:28 AM
Mountain Daylight Time · UTC-6
☀️ 07:50 · 🌙 18:58
03:28 3:28 AM
Eastern Daylight Time · UTC-4
☀️ 07:13 · 🌙 18:28
·
+2 h
Ottawa is 2 h ahead of Calgary.
When you, Calgary and Ottawa are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Calgary
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
🇨🇦 Ottawa
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 0 12 AM 1 1 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Calgary | 🇨🇦 Ottawa |
|---|---|---|
| Local time | 01:28 | 03:28 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Mountain Daylight Time | Eastern Daylight Time |
| UTC offset | UTC-6 | UTC-4 |
| Offset from Calgary | — | +2 h |
| IANA zone | America/Edmonton | America/Toronto |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 07:50 | 07:13 |
| Sunset | 18:58 | 18:28 |
| Daylight | 11 h 8 min | 11 h 15 min |
| People on this clock | 1,267,344 | 1,000,000 |
Compare Calgary with another city
More comparisons with Calgary: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Calgary and Ottawa: common questions
What is the time difference between Calgary and Ottawa?
Ottawa is 2 hours ahead: it uses UTC−4, while Calgary is on UTC−6.
What time is it in Ottawa when it is 9:00 AM in Calgary?
When it is 9:00 AM in Calgary, it is 11:00 AM in Ottawa.
What time is it in Ottawa when it is 6:00 PM in Calgary?
When it is 6:00 PM in Calgary, it is 8:00 PM in Ottawa.
Is there a time when both Calgary and Ottawa are at work?
Yes: from 9:00 AM to 4:00 PM in Calgary (11:00 AM to 6:00 PM in Ottawa), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Ottawa?
From 10:00 PM in Calgary it is already the next day in Ottawa. The other way round, until 2:00 AM in Ottawa it is still the previous day in Calgary.
Is the time difference between Calgary and Ottawa the same all year?
No. Only Ottawa switches to summer time, so the gap changes twice a year. From November 1, 2026, Ottawa will be 1 hour ahead of Calgary.
