Calgary to Waterbury, CT: time difference
Waterbury, CT 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 22:12 10:12 PM Waterbury, CT 00:12 12:12 AM You –:–
22:12 10:12 PM
Mountain Daylight Time · UTC-6
☀️ 08:05 · 🌙 18:39
00:12 12:12 AM
Eastern Daylight Time · UTC-4
☀️ 07:08 · 🌙 18:08
·
+2 h
Waterbury, CT is 2 h ahead of Calgary.
When you, Calgary and Waterbury, CT 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
🇺🇸 Waterbury, CT
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 | 🇺🇸 Waterbury, CT |
|---|---|---|
| Local time | 22:12 | 00:12 |
| Local date | Sunday, October 18, 2026 | Monday, October 19, 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/New York |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 08:05 | 07:08 |
| Sunset | 18:39 | 18:08 |
| Daylight | 10 h 34 min | 11 h |
| People on this clock | 1,267,344 | 110,366 |
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 Waterbury, CT: common questions
How far ahead of Calgary is Waterbury, CT?
Waterbury is 2 hours ahead of Calgary: UTC−4 against UTC−6.
What time is it in Waterbury, CT, at the start of the working day in Calgary?
The working day in Calgary starts at 9:00 AM; in Waterbury it is 11:00 AM at that moment.
What time is it in Waterbury, CT, at the end of the working day in Calgary?
The working day in Calgary ends at 6:00 PM; in Waterbury it is 8:00 PM at that moment.
When is a good time to call Waterbury, CT, from Calgary?
Between 9:00 AM and 4:00 PM in Calgary – that is 11:00 AM to 6:00 PM in Waterbury – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Waterbury, CT, compared with Calgary?
The new day starts in Waterbury earlier: at 10:00 PM in Calgary it is already midnight there. Until 2:00 AM in Waterbury, Calgary is still on the previous day.
Is the time difference between Calgary and Waterbury, CT, the same all year?
No. Only Waterbury switches to summer time, so the gap changes twice a year. From November 1, 2026, Waterbury will be 1 hour ahead of Calgary.
