Tbilisi to Ontario, CA: time difference
Ontario, 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 23:28 11:28 PM Ontario, CA 12:28 12:28 PM You –:–
23:28 11:28 PM
Georgia Standard Time · UTC+4
☀️ 07:15 · 🌙 18:18
12:28 12:28 PM
Pacific Daylight Time · UTC-7
☀️ 06:58 · 🌙 18:15
·
−11 h
Ontario, CA is 11 h behind Tbilisi.
When you, Tbilisi 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
🇬🇪 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
🇺🇸 Ontario, 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
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- Working hours
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Time zones side by side
| Detail | 🇬🇪 Tbilisi | 🇺🇸 Ontario, CA |
|---|---|---|
| Local time | 23:28 | 12:28 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 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 | 07:15 | 06:58 |
| Sunset | 18:18 | 18:15 |
| Daylight | 11 h 3 min | 11 h 17 min |
| People on this clock | 1,241,700 | 185,000 |
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 Ontario, CA: common questions
What is the time difference between Tbilisi and Ontario, CA?
Ontario is 11 hours behind: it uses UTC−7, while Tbilisi is on UTC+4.
What time is it in Ontario, CA, when it is 9:00 AM in Tbilisi?
When it is 9:00 AM in Tbilisi, it is 10:00 PM (the previous day) in Ontario.
What time is it in Ontario, CA, at the end of the working day in Tbilisi?
The working day in Tbilisi ends at 6:00 PM; in Ontario it is 7:00 AM at that moment.
When is a good time to call Ontario, CA, from Tbilisi?
Working hours (9:00 AM–6:00 PM) in Tbilisi and in Ontario do not overlap. At 9:00 AM in Tbilisi it is 10:00 PM (the previous day) in Ontario; when the working day starts in Ontario, it is 8:00 PM in Tbilisi.
Until what time in Tbilisi is it still yesterday in Ontario, CA?
Before 11:00 AM in Tbilisi, the date in Ontario has not changed yet. From 1:00 PM in Ontario, it is already the next day in Tbilisi.
Is the time difference between Tbilisi and Ontario, CA, the same all year?
No. Only Ontario switches to summer time, so the gap changes twice a year. From November 1, 2026, Ontario will be 12 hours behind Tbilisi.
