St. Thomas to Calgary: time difference
Calgary is 2 h behind St. Thomas. 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.
St. Thomas 21:29 9:29 PM Calgary 19:29 7:29 PM You –:–
21:29 9:29 PM
Eastern Daylight Time · UTC-4
☀️ 07:37 · 🌙 18:46
19:29 7:29 PM
Mountain Daylight Time · UTC-6
☀️ 07:59 · 🌙 18:47
·
−2 h
Calgary is 2 h behind St. Thomas.
When you, St. Thomas 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
🇨🇦 St. Thomas
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
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- Both working
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Time zones side by side
| Detail | 🇨🇦 St. Thomas | 🇨🇦 Calgary |
|---|---|---|
| Local time | 21:29 | 19:29 |
| Local date | Wednesday, October 14, 2026 | Wednesday, October 14, 2026 |
| Time zone | Eastern Daylight Time | Mountain Daylight Time |
| UTC offset | UTC-4 | UTC-6 |
| Offset from St. Thomas | — | −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 | 07:37 | 07:59 |
| Sunset | 18:46 | 18:47 |
| Daylight | 11 h 8 min | 10 h 49 min |
| People on this clock | 38,909 | 1,267,344 |
Compare St. Thomas with another city
More comparisons with St. Thomas: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
St. Thomas and Calgary: common questions
What is the time difference between St. Thomas and Calgary?
Calgary is 2 hours behind: it uses UTC−6, while St. Thomas is on UTC−4.
What time is it in Calgary at the start of the working day in St. Thomas?
The working day in St. Thomas starts at 9:00 AM; in Calgary it is 7:00 AM at that moment.
If it is 6:00 PM in St. Thomas, what time is it in Calgary?
At 6:00 PM in St. Thomas, clocks in Calgary show 4:00 PM.
Is there a time when both St. Thomas and Calgary are at work?
Yes: from 11:00 AM to 6:00 PM in St. Thomas (9:00 AM to 4:00 PM in Calgary), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Calgary?
Until 2:00 AM in St. Thomas it is still the previous day in Calgary. The other way round, from 10:00 PM in Calgary it is already the next day in St. Thomas.
Is the time difference between St. Thomas and Calgary the same all year?
No. Only St. Thomas switches to summer time, so the gap changes twice a year. From November 1, 2026, Calgary will be 1 hour behind St. Thomas.
