Oshawa to Calgary: time difference
Calgary is 2 h behind Oshawa. 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.
Oshawa 23:52 11:52 PM Calgary 21:52 9:52 PM You –:–
23:52 11:52 PM
Eastern Daylight Time · UTC-4
☀️ 07:23 · 🌙 18:44
21:52 9:52 PM
Mountain Daylight Time · UTC-6
☀️ 07:50 · 🌙 18:58
·
−2 h
Calgary is 2 h behind Oshawa.
When you, Oshawa 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
🇨🇦 Oshawa
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 | 🇨🇦 Oshawa | 🇨🇦 Calgary |
|---|---|---|
| Local time | 23:52 | 21:52 |
| Local date | Friday, October 9, 2026 | Friday, October 9, 2026 |
| Time zone | Eastern Daylight Time | Mountain Daylight Time |
| UTC offset | UTC-4 | UTC-6 |
| Offset from Oshawa | — | −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 | 07:23 | 07:50 |
| Sunset | 18:44 | 18:58 |
| Daylight | 11 h 21 min | 11 h 8 min |
| People on this clock | 159,458 | 1,267,344 |
Compare Oshawa with another city
More comparisons with Oshawa: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Oshawa and Calgary: common questions
What is the time difference between Oshawa and Calgary?
Calgary is 2 hours behind: it uses UTC−6, while Oshawa is on UTC−4.
If it is 9:00 AM in Oshawa, what time is it in Calgary?
At 9:00 AM in Oshawa, clocks in Calgary show 7:00 AM.
If it is 6:00 PM in Oshawa, what time is it in Calgary?
At 6:00 PM in Oshawa, clocks in Calgary show 4:00 PM.
Is there a time when both Oshawa and Calgary are at work?
Yes: from 11:00 AM to 6:00 PM in Oshawa (9:00 AM to 4:00 PM in Calgary), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Calgary compared with Oshawa?
The new day starts in Calgary later: until 2:00 AM in Oshawa, it is still the previous day there. From 10:00 PM in Calgary, Oshawa is already on the next day.
Does the time difference between Oshawa and Calgary change?
Yes. The clocks change only in Oshawa. From November 1, 2026, Calgary will be 1 hour behind Oshawa.
