Castro Valley, CA to Lisbon: time difference
Lisbon is 8 h ahead of Castro Valley, CA. Live clocks for both, the working hours they share, and how each one sits against your own time.
+8 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Castro Valley, CA 01:03 1:03 AM Lisbon 09:03 9:03 AM You –:–
01:03 1:03 AM
Pacific Daylight Time · UTC-7
☀️ 07:23 · 🌙 18:24
09:03 9:03 AM
Western European Summer Time · UTC+1
☀️ 07:53 · 🌙 18:50
·
+8 h
Lisbon is 8 h ahead of Castro Valley, CA.
When you, Castro Valley, CA and Lisbon are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Castro Valley, 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
🇵🇹 Lisbon
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 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Castro Valley, CA | 🇵🇹 Lisbon |
|---|---|---|
| Local time | 01:03 | 09:03 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Pacific Daylight Time | Western European Summer Time |
| UTC offset | UTC-7 | UTC+1 |
| Offset from Castro Valley, CA | — | +8 h |
| IANA zone | America/Los Angeles | Europe/Lisbon |
| Daylight saving | On summer time → UTC-8, Nov 1, 01:00 | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 07:23 | 07:53 |
| Sunset | 18:24 | 18:50 |
| Daylight | 11 h 1 min | 10 h 57 min |
| People on this clock | 61,388 | 545,923 |
Compare Castro Valley, CA with another city
More comparisons with Castro Valley, CA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Castro Valley, CA and Lisbon: common questions
How many hours ahead of Castro Valley, CA, is Lisbon?
The clocks in Lisbon are 8 hours ahead of those in Castro Valley (UTC+1 and UTC−7).
If it is 9:00 AM in Castro Valley, CA, what time is it in Lisbon?
At 9:00 AM in Castro Valley, clocks in Lisbon show 5:00 PM.
What time is it in Lisbon when it is 6:00 PM in Castro Valley, CA?
When it is 6:00 PM in Castro Valley, it is 2:00 AM (the next day) in Lisbon.
Is there a time when both Castro Valley, CA, and Lisbon are at work?
Yes: from 9:00 AM to 10:00 AM in Castro Valley (5:00 PM to 6:00 PM in Lisbon), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Lisbon compared with Castro Valley, CA?
The new day starts in Lisbon earlier: at 4:00 PM in Castro Valley it is already midnight there. Until 8:00 AM in Lisbon, Castro Valley is still on the previous day.
Does the time gap between Castro Valley, CA, and Lisbon change during the year?
Yes, because the clocks in Castro Valley and in Lisbon change on different dates. Next change: from October 25, 2026, Lisbon will be 7 hours ahead of Castro Valley.
