San Mateo, CA to Toronto: time difference
Toronto is 3 h ahead of San Mateo, CA. 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.
San Mateo, CA 10:39 10:39 AM Toronto 13:39 1:39 PM You –:–
10:39 10:39 AM
Pacific Daylight Time · UTC-7
☀️ 07:21 · 🌙 18:29
13:39 1:39 PM
Eastern Daylight Time · UTC-4
☀️ 07:36 · 🌙 18:31
·
+3 h
Toronto is 3 h ahead of San Mateo, CA.
When you, San Mateo, CA and Toronto are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 San Mateo, CA
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
🇨🇦 Toronto
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 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 San Mateo, CA | 🇨🇦 Toronto |
|---|---|---|
| Local time | 10:39 | 13:39 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Pacific Daylight Time | Eastern Daylight Time |
| UTC offset | UTC-7 | UTC-4 |
| Offset from San Mateo, CA | — | +3 h |
| IANA zone | America/Los Angeles | America/Toronto |
| Daylight saving | On summer time → UTC-8, Nov 1, 01:00 | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 07:21 | 07:36 |
| Sunset | 18:29 | 18:31 |
| Daylight | 11 h 8 min | 10 h 55 min |
| People on this clock | 103,536 | 2,731,571 |
Compare San Mateo, CA with another city
More comparisons with San Mateo, CA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Mateo, CA and Toronto: common questions
How far ahead of San Mateo, CA, is Toronto?
Toronto is 3 hours ahead of San Mateo: UTC−4 against UTC−7.
What time is it in Toronto at the start of the working day in San Mateo, CA?
The working day in San Mateo starts at 9:00 AM; in Toronto it is 12:00 PM at that moment.
If it is 6:00 PM in San Mateo, CA, what time is it in Toronto?
At 6:00 PM in San Mateo, clocks in Toronto show 9:00 PM.
When is a good time to call Toronto from San Mateo, CA?
Between 9:00 AM and 3:00 PM in San Mateo – that is 12:00 PM to 6:00 PM in Toronto – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Toronto?
From 9:00 PM in San Mateo, CA, it is already the next day in Toronto. The other way round, until 3:00 AM in Toronto it is still the previous day in San Mateo.
Does the time difference between San Mateo, CA, and Toronto change?
No. The clocks in San Mateo and in Toronto change on the same dates, so the difference stays 3 hours.
