Lisbon to Ontario, CA: time difference
Ontario, 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 00:22 12:22 AM Ontario, CA 16:22 4:22 PM You –:–
00:22 12:22 AM
Western European Summer Time · UTC+1
☀️ 07:48 · 🌙 18:57
16:22 4:22 PM
Pacific Daylight Time · UTC-7
☀️ 06:58 · 🌙 18:15
·
−8 h
Ontario, CA is 8 h behind Lisbon.
When you, Lisbon and Ontario, 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
🇺🇸 Ontario, 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 | 🇺🇸 Ontario, CA |
|---|---|---|
| Local time | 00:22 | 16:22 |
| Local date | Sunday, October 18, 2026 | Saturday, October 17, 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 | 07:48 | 06:58 |
| Sunset | 18:57 | 18:15 |
| Daylight | 11 h 9 min | 11 h 17 min |
| People on this clock | 545,923 | 185,000 |
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 Ontario, CA: common questions
How many hours behind Lisbon is Ontario, CA?
The clocks in Ontario are 8 hours behind those in Lisbon (UTC−7 and UTC+1).
What time is it in Ontario, CA, at the start of the working day in Lisbon?
The working day in Lisbon starts at 9:00 AM; in Ontario it is 1:00 AM at that moment.
What time is it in Ontario, CA, at the end of the working day in Lisbon?
The working day in Lisbon ends at 6:00 PM; in Ontario it is 10:00 AM at that moment.
When do working hours in Lisbon and in Ontario, 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 Ontario.
When is it still the previous day in Ontario, CA?
Until 8:00 AM in Lisbon it is still the previous day in Ontario. The other way round, from 4:00 PM in Ontario it is already the next day in Lisbon.
Does the time difference between Lisbon and Ontario, CA, change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Ontario will be 7 hours behind Lisbon.
