Calgary to Oshawa: time difference
Oshawa 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 01:01 1:01 AM Oshawa 03:01 3:01 AM You –:–
01:01 1:01 AM
Mountain Daylight Time · UTC-6
☀️ 07:50 · 🌙 18:58
03:01 3:01 AM
Eastern Daylight Time · UTC-4
☀️ 07:24 · 🌙 18:42
·
+2 h
Oshawa is 2 h ahead of Calgary.
When you, Calgary and Oshawa 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
🇨🇦 Oshawa
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 | 🇨🇦 Oshawa |
|---|---|---|
| Local time | 01:01 | 03:01 |
| 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 | 07:24 |
| Sunset | 18:58 | 18:42 |
| Daylight | 11 h 8 min | 11 h 18 min |
| People on this clock | 1,267,344 | 159,458 |
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 Oshawa: common questions
How many hours ahead of Calgary is Oshawa?
The clocks in Oshawa are 2 hours ahead of those in Calgary (UTC−4 and UTC−6).
If it is 9:00 AM in Calgary, what time is it in Oshawa?
At 9:00 AM in Calgary, clocks in Oshawa show 11:00 AM.
What time is it in Oshawa when it is 6:00 PM in Calgary?
When it is 6:00 PM in Calgary, it is 8:00 PM in Oshawa.
When is a good time to call Oshawa from Calgary?
Between 9:00 AM and 4:00 PM in Calgary – that is 11:00 AM to 6:00 PM in Oshawa – both places are within working hours (9:00 AM–6:00 PM).
From what time in Calgary is it tomorrow in Oshawa?
Once it is 10:00 PM in Calgary, the date in Oshawa has already changed. Until 2:00 AM in Oshawa, it is still the previous day in Calgary.
Is the time difference between Calgary and Oshawa the same all year?
No. Only Oshawa switches to summer time, so the gap changes twice a year. From November 1, 2026, Oshawa will be 1 hour ahead of Calgary.
