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 12:30 12:30 PM Calgary 10:30 10:30 AM You –:–
12:30 12:30 PM
Atlantic Standard Time · UTC-4
☀️ 06:15 · 🌙 17:57
10:30 10:30 AM
Mountain Daylight Time · UTC-6
☀️ 08:04 · 🌙 18:41
·
−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
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇻🇮 St Thomas | 🇨🇦 Calgary |
|---|---|---|
| Local time | 12:30 | 10:30 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Atlantic Standard Time | Mountain Daylight Time |
| UTC offset | UTC-4 | UTC-6 |
| Offset from St Thomas | — | −2 h |
| IANA zone | America/St Thomas | America/Edmonton |
| Daylight saving | Not observed | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 06:15 | 08:04 |
| Sunset | 17:57 | 18:41 |
| Daylight | 11 h 42 min | 10 h 37 min |
| People on this clock | 20,000 | 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
How far behind St Thomas is Calgary?
Calgary is 2 hours behind St Thomas: UTC−6 against 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.
What time is it in Calgary at the end of the working day in St Thomas?
The working day in St Thomas ends at 6:00 PM; in Calgary it is 4:00 PM at that moment.
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.
Does the time gap between St Thomas and Calgary change during the year?
No, the clocks change neither in St Thomas nor in Calgary, so the gap is 2 hours all year round.
