Phuket to Foster City, CA: time difference
Foster City, CA is 14 h behind Phuket. 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.
Phuket 15:45 3:45 PM Foster City, CA 01:45 1:45 AM You –:–
15:45 3:45 PM
Indochina Time · UTC+7
☀️ 06:14 · 🌙 18:09
01:45 1:45 AM
Pacific Daylight Time · UTC-7
☀️ 07:25 · 🌙 18:24
·
−14 h
Foster City, CA is 14 h behind Phuket.
When you, Phuket 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
🇹🇭 Phuket
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
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 8 8 AM 9 9 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇭 Phuket | 🇺🇸 Foster City, CA |
|---|---|---|
| Local time | 15:45 | 01:45 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Indochina Time | Pacific Daylight Time |
| UTC offset | UTC+7 | UTC-7 |
| Offset from Phuket | — | −14 h |
| IANA zone | Asia/Bangkok | America/Los Angeles |
| Daylight saving | Not observed | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 06:14 | 07:25 |
| Sunset | 18:09 | 18:24 |
| Daylight | 11 h 55 min | 10 h 59 min |
| People on this clock | 79,308 | 30,567 |
Compare Phuket with another city
More comparisons with Phuket: the time zones next to it and the far side of the clock.
Big time differences
Phuket and Foster City, CA: common questions
How many hours behind Phuket is Foster City, CA?
The clocks in Foster City are 14 hours behind those in Phuket (UTC−7 and UTC+7).
What time is it in Foster City, CA, when it is 9:00 AM in Phuket?
When it is 9:00 AM in Phuket, it is 7:00 PM (the previous day) in Foster City.
What time is it in Foster City, CA, at the end of the working day in Phuket?
The working day in Phuket ends at 6:00 PM; in Foster City it is 4:00 AM at that moment.
When do working hours in Phuket and in Foster City, CA, overlap?
They don't: there are no shared working hours. The start of the day in Phuket (9:00 AM) is 7:00 PM (the previous day) in Foster City, and the start of the day in Foster City is 11:00 PM in Phuket.
When does the date change in Foster City, CA, compared with Phuket?
The new day starts in Foster City later: until 2:00 PM in Phuket, it is still the previous day there. From 10:00 AM in Foster City, Phuket is already on the next day.
Does the time gap between Phuket and Foster City, CA, change during the year?
Yes – daylight saving time is used in Foster City but not in Phuket. From November 1, 2026, Foster City will be 15 hours behind Phuket.
