Tbilisi to Castro Valley, CA: time difference
Castro Valley, CA is 11 h behind Tbilisi. 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.
Tbilisi 12:43 12:43 PM Castro Valley, CA 01:43 1:43 AM You –:–
12:43 12:43 PM
Georgia Standard Time · UTC+4
☀️ 07:21 · 🌙 18:11
01:43 1:43 AM
Pacific Daylight Time · UTC-7
☀️ 07:24 · 🌙 18:23
·
−11 h
Castro Valley, CA is 11 h behind Tbilisi.
When you, Tbilisi 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
🇬🇪 Tbilisi
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
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 10 10 AM 11 11 AM 12 12 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
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Time zones side by side
| Detail | 🇬🇪 Tbilisi | 🇺🇸 Castro Valley, CA |
|---|---|---|
| Local time | 12:43 | 01:43 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Georgia Standard Time | Pacific Daylight Time |
| UTC offset | UTC+4 | UTC-7 |
| Offset from Tbilisi | — | −11 h |
| IANA zone | Asia/Tbilisi | America/Los Angeles |
| Daylight saving | Not observed | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:21 | 07:24 |
| Sunset | 18:11 | 18:23 |
| Daylight | 10 h 50 min | 10 h 59 min |
| People on this clock | 1,241,700 | 61,388 |
Compare Tbilisi with another city
More comparisons with Tbilisi: the time zones next to it and the far side of the clock.
Big time differences
Tbilisi and Castro Valley, CA: common questions
How many hours behind Tbilisi is Castro Valley, CA?
The clocks in Castro Valley are 11 hours behind those in Tbilisi (UTC−7 and UTC+4).
If it is 9:00 AM in Tbilisi, what time is it in Castro Valley, CA?
At 9:00 AM in Tbilisi, clocks in Castro Valley show 10:00 PM (the previous day).
If it is 6:00 PM in Tbilisi, what time is it in Castro Valley, CA?
At 6:00 PM in Tbilisi, clocks in Castro Valley show 7:00 AM.
When do working hours in Tbilisi and in Castro Valley, CA, overlap?
They don't: there are no shared working hours. The start of the day in Tbilisi (9:00 AM) is 10:00 PM (the previous day) in Castro Valley, and the start of the day in Castro Valley is 8:00 PM in Tbilisi.
Until what time in Tbilisi is it still yesterday in Castro Valley, CA?
Before 11:00 AM in Tbilisi, the date in Castro Valley has not changed yet. From 1:00 PM in Castro Valley, it is already the next day in Tbilisi.
Is the time difference between Tbilisi 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 12 hours behind Tbilisi.
