🇵🇹 Lisbon, Portugal
53
- Western European Summer Time
- UTC+1
- Golden hour
☀️ 07:49 · 🌙 18:56 · 11 h 7 min
Lisbon to San Mateo, CA: time difference
San Mateo, CA is 8 h behind Lisbon. 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.
Lisbon 17:46 5:46 PM San Mateo, CA 09:46 9:46 AM You –:–
17:46 5:46 PM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
09:46 9:46 AM
Pacific Daylight Time · UTC-7
☀️ 07:21 · 🌙 18:29
·
−8 h
San Mateo, CA is 8 h behind Lisbon.
When you, Lisbon 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
🇵🇹 Lisbon
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
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Lisbon | 🇺🇸 San Mateo, CA |
|---|---|---|
| Local time | 17:46 | 09:46 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Western European Summer Time | Pacific Daylight Time |
| UTC offset | UTC+1 | UTC-7 |
| Offset from Lisbon | — | −8 h |
| IANA zone | Europe/Lisbon | America/Los Angeles |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:49 | 07:21 |
| Sunset | 18:56 | 18:29 |
| Daylight | 11 h 7 min | 11 h 8 min |
| People on this clock | 545,923 | 103,536 |
Compare Lisbon with another city
More comparisons with Lisbon: the time zones next to it and the far side of the clock.
Big time differences
Lisbon and San Mateo, CA: common questions
How many hours behind Lisbon is San Mateo, CA?
The clocks in San Mateo are 8 hours behind those in Lisbon (UTC−7 and UTC+1).
What time is it in San Mateo, CA, at the start of the working day in Lisbon?
The working day in Lisbon starts at 9:00 AM; in San Mateo it is 1:00 AM at that moment.
What time is it in San Mateo, CA, at the end of the working day in Lisbon?
The working day in Lisbon ends at 6:00 PM; in San Mateo it is 10:00 AM at that moment.
When is a good time to call San Mateo, CA, from Lisbon?
Between 5:00 PM and 6:00 PM in Lisbon – that is 9:00 AM to 10:00 AM in San Mateo – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in San Mateo, CA, compared with Lisbon?
The new day starts in San Mateo later: until 8:00 AM in Lisbon, it is still the previous day there. From 4:00 PM in San Mateo, Lisbon is already on the next day.
Is the time difference between Lisbon and San Mateo, CA, the same all year?
No. Both places use summer time, but they switch on different dates, so for a while the gap changes. From October 25, 2026, San Mateo will be 7 hours behind Lisbon.
