Boston, MA to Calgary: time difference
Calgary is 2 h behind Boston, MA. 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.
Boston, MA 21:06 9:06 PM Calgary 19:06 7:06 PM You –:–
21:06 9:06 PM
Eastern Daylight Time · UTC-4
☀️ 06:51 · 🌙 18:14
19:06 7:06 PM
Mountain Daylight Time · UTC-6
☀️ 07:50 · 🌙 18:58
·
−2 h
Calgary is 2 h behind Boston, MA.
When you, Boston, MA 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
🇺🇸 Boston, MA
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 | 🇺🇸 Boston, MA | 🇨🇦 Calgary |
|---|---|---|
| Local time | 21:06 | 19:06 |
| 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 Boston, MA | — | −2 h |
| IANA zone | America/New York | America/Edmonton |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 06:51 | 07:50 |
| Sunset | 18:14 | 18:58 |
| Daylight | 11 h 23 min | 11 h 8 min |
| People on this clock | 675,647 | 1,267,344 |
Compare Boston, MA with another city
More comparisons with Boston, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Boston, MA and Calgary: common questions
How far behind Boston, MA, is Calgary?
Calgary is 2 hours behind Boston: UTC−6 against UTC−4.
What time is it in Calgary at the start of the working day in Boston, MA?
The working day in Boston starts at 9:00 AM; in Calgary it is 7:00 AM at that moment.
What time is it in Calgary when it is 6:00 PM in Boston, MA?
When it is 6:00 PM in Boston, it is 4:00 PM in Calgary.
When is a good time to call Calgary from Boston, MA?
Between 11:00 AM and 6:00 PM in Boston – that is 9:00 AM to 4:00 PM in Calgary – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Calgary?
Until 2:00 AM in Boston, MA, 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 Boston.
Does the time difference between Boston, MA, and Calgary change?
Yes. The clocks change only in Boston. From November 1, 2026, Calgary will be 1 hour behind Boston.
