Phuket to Castro Valley, CA: time difference
Castro Valley, 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 18:39 6:39 PM Castro Valley, CA 04:39 4:39 AM You –:–
18:39 6:39 PM
Indochina Time · UTC+7
☀️ 06:14 · 🌙 18:09
04:39 4:39 AM
Pacific Daylight Time · UTC-7
☀️ 07:24 · 🌙 18:23
·
−14 h
Castro Valley, CA is 14 h behind Phuket.
When you, Phuket and Castro Valley, 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
🇺🇸 Castro Valley, 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 | 🇺🇸 Castro Valley, CA |
|---|---|---|
| Local time | 18:39 | 04:39 |
| 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 | 07:24 |
| Sunset | 18:09 | 18:23 |
| Daylight | 11 h 55 min | 10 h 59 min |
| People on this clock | 79,308 | 61,388 |
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 Castro Valley, CA: common questions
What is the time difference between Phuket and Castro Valley, CA?
Castro Valley is 14 hours behind: it uses UTC−7, while Phuket is on UTC+7.
What time is it in Castro Valley, 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 Castro Valley.
What time is it in Castro Valley, CA, at the end of the working day in Phuket?
The working day in Phuket ends at 6:00 PM; in Castro Valley it is 4:00 AM at that moment.
Is there a time when both Phuket and Castro Valley, CA, are at work?
No, the working days (9:00 AM–6:00 PM) do not overlap. When the day starts in Phuket at 9:00 AM, it is 7:00 PM (the previous day) in Castro Valley; the day in Castro Valley starts at 11:00 PM in Phuket time.
When is it still the previous day in Castro Valley, CA?
Until 2:00 PM in Phuket it is still the previous day in Castro Valley. The other way round, from 10:00 AM in Castro Valley it is already the next day in Phuket.
Is the time difference between Phuket and Castro Valley, CA, the same all year?
No. Only Castro Valley switches to summer time, so the gap changes twice a year. From November 1, 2026, Castro Valley will be 15 hours behind Phuket.
