🇵🇹 Lisbon, Portugal
04
- Western European Summer Time
- UTC+1
- Golden hour
☀️ 07:53 · 🌙 18:50 · 10 h 57 min
Lisbon to Foster City, CA: time difference
Foster City, 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 08:35 8:35 AM Foster City, CA 00:35 12:35 AM You –:–
08:35 8:35 AM
Western European Summer Time · UTC+1
☀️ 07:53 · 🌙 18:50
00:35 12:35 AM
Pacific Daylight Time · UTC-7
☀️ 07:24 · 🌙 18:25
·
−8 h
Foster City, CA is 8 h behind Lisbon.
When you, Lisbon and Foster City, 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
🇺🇸 Foster City, 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 | 🇺🇸 Foster City, CA |
|---|---|---|
| Local time | 08:35 | 00:35 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 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 | 07:53 | 07:24 |
| Sunset | 18:50 | 18:25 |
| Daylight | 10 h 57 min | 11 h 1 min |
| People on this clock | 545,923 | 30,567 |
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 Foster City, CA: common questions
What is the time difference between Lisbon and Foster City, CA?
Foster City is 8 hours behind: it uses UTC−7, while Lisbon is on UTC+1.
What time is it in Foster City, CA, at the start of the working day in Lisbon?
The working day in Lisbon starts at 9:00 AM; in Foster City it is 1:00 AM at that moment.
What time is it in Foster City, CA, when it is 6:00 PM in Lisbon?
When it is 6:00 PM in Lisbon, it is 10:00 AM in Foster City.
When do working hours in Lisbon and in Foster City, CA, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 5:00 PM to 6:00 PM in Lisbon, which is 9:00 AM to 10:00 AM in Foster City.
When does the date change in Foster City, CA, compared with Lisbon?
The new day starts in Foster City later: until 8:00 AM in Lisbon, it is still the previous day there. From 4:00 PM in Foster City, Lisbon is already on the next day.
Does the time difference between Lisbon and Foster City, CA, change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Foster City will be 7 hours behind Lisbon.
