Lisbon to Riverside, CA: time difference
Riverside, 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 07:19 7:19 AM Riverside, CA 23:19 11:19 PM You –:–
07:19 7:19 AM
Western European Summer Time · UTC+1
☀️ 07:41 · 🌙 19:07
23:19 11:19 PM
Pacific Daylight Time · UTC-7
☀️ 06:50 · 🌙 18:24
·
−8 h
Riverside, CA is 8 h behind Lisbon.
When you, Lisbon and Riverside, 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
🇺🇸 Riverside, 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 | 🇺🇸 Riverside, CA |
|---|---|---|
| Local time | 07:19 | 23:19 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 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 | 07:41 | 06:50 |
| Sunset | 19:07 | 18:24 |
| Daylight | 11 h 26 min | 11 h 34 min |
| People on this clock | 545,923 | 320,000 |
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 Riverside, CA: common questions
How far behind Lisbon is Riverside, CA?
Riverside is 8 hours behind Lisbon: UTC−7 against UTC+1.
If it is 9:00 AM in Lisbon, what time is it in Riverside, CA?
At 9:00 AM in Lisbon, clocks in Riverside show 1:00 AM.
If it is 6:00 PM in Lisbon, what time is it in Riverside, CA?
At 6:00 PM in Lisbon, clocks in Riverside show 10:00 AM.
When is a good time to call Riverside, CA, from Lisbon?
Between 5:00 PM and 6:00 PM in Lisbon – that is 9:00 AM to 10:00 AM in Riverside – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Riverside, CA?
Until 8:00 AM in Lisbon it is still the previous day in Riverside. The other way round, from 4:00 PM in Riverside it is already the next day in Lisbon.
Does the time gap between Lisbon and Riverside, CA, change during the year?
Yes, because the clocks in Lisbon and in Riverside change on different dates. Next change: from October 25, 2026, Riverside will be 7 hours behind Lisbon.
