Calgary to Sudbury: time difference
Sudbury 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 21:17 9:17 PM Sudbury 23:17 11:17 PM You –:–
21:17 9:17 PM
Mountain Daylight Time · UTC-6
☀️ 07:59 · 🌙 18:47
23:17 11:17 PM
Eastern Daylight Time · UTC-4
☀️ 07:40 · 🌙 18:41
·
+2 h
Sudbury is 2 h ahead of Calgary.
When you, Calgary and Sudbury 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
🇨🇦 Sudbury
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 | 🇨🇦 Sudbury |
|---|---|---|
| Local time | 21:17 | 23:17 |
| Local date | Wednesday, October 14, 2026 | Wednesday, October 14, 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 | 07:59 | 07:40 |
| Sunset | 18:47 | 18:41 |
| Daylight | 10 h 49 min | 11 h |
| People on this clock | 1,267,344 | 161,531 |
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 Sudbury: common questions
How many hours ahead of Calgary is Sudbury?
The clocks in Sudbury are 2 hours ahead of those in Calgary (UTC−4 and UTC−6).
What time is it in Sudbury when it is 9:00 AM in Calgary?
When it is 9:00 AM in Calgary, it is 11:00 AM in Sudbury.
What time is it in Sudbury at the end of the working day in Calgary?
The working day in Calgary ends at 6:00 PM; in Sudbury it is 8:00 PM at that moment.
When do working hours in Calgary and in Sudbury overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 4:00 PM in Calgary, which is 11:00 AM to 6:00 PM in Sudbury.
When does the date change in Sudbury compared with Calgary?
The new day starts in Sudbury earlier: at 10:00 PM in Calgary it is already midnight there. Until 2:00 AM in Sudbury, Calgary is still on the previous day.
Is the time difference between Calgary and Sudbury the same all year?
No. Only Sudbury switches to summer time, so the gap changes twice a year. From November 1, 2026, Sudbury will be 1 hour ahead of Calgary.
