Chiang Mai to Castro Valley, CA: time difference
Castro Valley, CA is 14 h behind Chiang Mai. 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.
Chiang Mai 20:15 8:15 PM Castro Valley, CA 06:15 6:15 AM You –:–
20:15 8:15 PM
Indochina Time · UTC+7
☀️ 06:21 · 🌙 17:58
06:15 6:15 AM
Pacific Daylight Time · UTC-7
☀️ 07:24 · 🌙 18:23
·
−14 h
Castro Valley, CA is 14 h behind Chiang Mai.
When you, Chiang Mai 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
🇹🇭 Chiang Mai
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 | 🇹🇭 Chiang Mai | 🇺🇸 Castro Valley, CA |
|---|---|---|
| Local time | 20:15 | 06:15 |
| 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 Chiang Mai | — | −14 h |
| IANA zone | Asia/Bangkok | America/Los Angeles |
| Daylight saving | Not observed | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 06:21 | 07:24 |
| Sunset | 17:58 | 18:23 |
| Daylight | 11 h 37 min | 10 h 59 min |
| People on this clock | 127,240 | 61,388 |
Compare Chiang Mai with another city
More comparisons with Chiang Mai: the time zones next to it and the far side of the clock.
Big time differences
Chiang Mai and Castro Valley, CA: common questions
What is the time difference between Chiang Mai and Castro Valley, CA?
Castro Valley is 14 hours behind: it uses UTC−7, while Chiang Mai is on UTC+7.
What time is it in Castro Valley, CA, at the start of the working day in Chiang Mai?
The working day in Chiang Mai starts at 9:00 AM; in Castro Valley it is 7:00 PM (the previous day) at that moment.
What time is it in Castro Valley, CA, when it is 6:00 PM in Chiang Mai?
When it is 6:00 PM in Chiang Mai, it is 4:00 AM in Castro Valley.
When do working hours in Chiang Mai and in Castro Valley, CA, overlap?
They don't: there are no shared working hours. The start of the day in Chiang Mai (9:00 AM) is 7:00 PM (the previous day) in Castro Valley, and the start of the day in Castro Valley is 11:00 PM in Chiang Mai.
When does the date change in Castro Valley, CA, compared with Chiang Mai?
The new day starts in Castro Valley later: until 2:00 PM in Chiang Mai, it is still the previous day there. From 10:00 AM in Castro Valley, Chiang Mai is already on the next day.
Does the time gap between Chiang Mai and Castro Valley, CA, change during the year?
Yes – daylight saving time is used in Castro Valley but not in Chiang Mai. From November 1, 2026, Castro Valley will be 15 hours behind Chiang Mai.
