Toronto to Boulder, CO: time difference
Boulder, CO is 2 h behind Toronto. 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.
Toronto 12:02 12:02 PM Boulder, CO 10:02 10:02 AM You –:–
12:02 12:02 PM
Eastern Daylight Time · UTC-4
☀️ 07:38 · 🌙 18:28
10:02 10:02 AM
Mountain Daylight Time · UTC-6
☀️ 07:19 · 🌙 18:17
·
−2 h
Boulder, CO is 2 h behind Toronto.
When you, Toronto and Boulder, CO are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Toronto
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
🇺🇸 Boulder, CO
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 | 🇨🇦 Toronto | 🇺🇸 Boulder, CO |
|---|---|---|
| Local time | 12:02 | 10:02 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Eastern Daylight Time | Mountain Daylight Time |
| UTC offset | UTC-4 | UTC-6 |
| Offset from Toronto | — | −2 h |
| IANA zone | America/Toronto | America/Denver |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 07:38 | 07:19 |
| Sunset | 18:28 | 18:17 |
| Daylight | 10 h 49 min | 10 h 58 min |
| People on this clock | 2,731,571 | 106,803 |
Compare Toronto with another city
More comparisons with Toronto: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Toronto and Boulder, CO: common questions
How many hours behind Toronto is Boulder, CO?
The clocks in Boulder are 2 hours behind those in Toronto (UTC−6 and UTC−4).
What time is it in Boulder, CO, when it is 9:00 AM in Toronto?
When it is 9:00 AM in Toronto, it is 7:00 AM in Boulder.
What time is it in Boulder, CO, at the end of the working day in Toronto?
The working day in Toronto ends at 6:00 PM; in Boulder it is 4:00 PM at that moment.
Is there a time when both Toronto and Boulder, CO, are at work?
Yes: from 11:00 AM to 6:00 PM in Toronto (9:00 AM to 4:00 PM in Boulder), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Toronto is it still yesterday in Boulder, CO?
Before 2:00 AM in Toronto, the date in Boulder has not changed yet. From 10:00 PM in Boulder, it is already the next day in Toronto.
Is the time difference between Toronto and Boulder, CO, the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 2 hours.
