Montreal to Castle Rock, CO: time difference
Castle Rock, CO is 2 h behind Montreal. 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.
Montreal 16:03 4:03 PM Castle Rock, CO 14:03 2:03 PM You –:–
16:03 4:03 PM
Eastern Daylight Time · UTC-4
☀️ 07:04 · 🌙 18:19
14:03 2:03 PM
Mountain Daylight Time · UTC-6
☀️ 07:05 · 🌙 18:29
·
−2 h
Castle Rock, CO is 2 h behind Montreal.
When you, Montreal and Castle Rock, 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
🇨🇦 Montreal
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
🇺🇸 Castle Rock, 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 | 🇨🇦 Montreal | 🇺🇸 Castle Rock, CO |
|---|---|---|
| Local time | 16:03 | 14:03 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern Daylight Time | Mountain Daylight Time |
| UTC offset | UTC-4 | UTC-6 |
| Offset from Montreal | — | −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 | 07:04 | 07:05 |
| Sunset | 18:19 | 18:29 |
| Daylight | 11 h 15 min | 11 h 25 min |
| People on this clock | 1,762,949 | 73,158 |
Compare Montreal with another city
More comparisons with Montreal: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Montreal and Castle Rock, CO: common questions
What is the time difference between Montreal and Castle Rock, CO?
Castle Rock is 2 hours behind: it uses UTC−6, while Montreal is on UTC−4.
If it is 9:00 AM in Montreal, what time is it in Castle Rock, CO?
At 9:00 AM in Montreal, clocks in Castle Rock show 7:00 AM.
If it is 6:00 PM in Montreal, what time is it in Castle Rock, CO?
At 6:00 PM in Montreal, clocks in Castle Rock show 4:00 PM.
When do working hours in Montreal and in Castle Rock, CO, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 11:00 AM to 6:00 PM in Montreal, which is 9:00 AM to 4:00 PM in Castle Rock.
Until what time in Montreal is it still yesterday in Castle Rock, CO?
Before 2:00 AM in Montreal, the date in Castle Rock has not changed yet. From 10:00 PM in Castle Rock, it is already the next day in Montreal.
Does the time difference between Montreal and Castle Rock, CO, change?
No. The clocks in Montreal and in Castle Rock change on the same dates, so the difference stays 2 hours.
