Montreal to San Mateo, CA: time difference
San Mateo, CA is 3 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 13:46 1:46 PM San Mateo, CA 10:46 10:46 AM You –:–
13:46 1:46 PM
Eastern Daylight Time · UTC-4
☀️ 07:15 · 🌙 18:05
10:46 10:46 AM
Pacific Daylight Time · UTC-7
☀️ 07:21 · 🌙 18:29
·
−3 h
San Mateo, CA is 3 h behind Montreal.
When you, Montreal and San Mateo, CA 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
🇺🇸 San Mateo, CA
21 9 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Montreal | 🇺🇸 San Mateo, CA |
|---|---|---|
| Local time | 13:46 | 10:46 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from Montreal | — | −3 h |
| IANA zone | America/Toronto | America/Los Angeles |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:15 | 07:21 |
| Sunset | 18:05 | 18:29 |
| Daylight | 10 h 50 min | 11 h 8 min |
| People on this clock | 1,762,949 | 103,536 |
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 San Mateo, CA: common questions
How many hours behind Montreal is San Mateo, CA?
The clocks in San Mateo are 3 hours behind those in Montreal (UTC−7 and UTC−4).
If it is 9:00 AM in Montreal, what time is it in San Mateo, CA?
At 9:00 AM in Montreal, clocks in San Mateo show 6:00 AM.
If it is 6:00 PM in Montreal, what time is it in San Mateo, CA?
At 6:00 PM in Montreal, clocks in San Mateo show 3:00 PM.
When do working hours in Montreal and in San Mateo, CA, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Montreal, which is 9:00 AM to 3:00 PM in San Mateo.
Until what time in Montreal is it still yesterday in San Mateo, CA?
Before 3:00 AM in Montreal, the date in San Mateo has not changed yet. From 9:00 PM in San Mateo, it is already the next day in Montreal.
Does the time difference between Montreal and San Mateo, CA, change?
No. The clocks in Montreal and in San Mateo change on the same dates, so the difference stays 3 hours.
