San Diego to Tokyo
Converting a fixed time. America/Los_Angeles → Asia/Tokyo · 8,984 km (5,579 miles) apart
Clocks go back 1 hour on Sunday, 1st November 2026, at 1:59 am local time (1:00 am after the change).
Clocks here do not change — this zone stays on the same offset all year.
Convert a specific time minutes work, not just whole hours
Hour by hour
| San Diego | Tokyo | 24h | Good to call? |
|---|---|---|---|
| 12am | 4pm | 00:00 → 16:00 | asleep in San Diego |
| 1am now | 5pm | 01:00 → 17:00 | asleep in San Diego |
| 2am | 6pm | 02:00 → 18:00 | asleep in San Diego |
| 3am | 7pm | 03:00 → 19:00 | asleep in San Diego |
| 4am | 8pm | 04:00 → 20:00 | asleep in San Diego |
| 5am | 9pm | 05:00 → 21:00 | asleep in San Diego |
| 6am | 10pm | 06:00 → 22:00 | asleep in Tokyo |
| 7am | 11pm | 07:00 → 23:00 | asleep in Tokyo |
| 8am | 12am Fri | 08:00 → 00:00 | asleep in Tokyo |
| 9am | 1am Fri | 09:00 → 01:00 | asleep in Tokyo |
| 10am | 2am Fri | 10:00 → 02:00 | asleep in Tokyo |
| 11am | 3am Fri | 11:00 → 03:00 | asleep in Tokyo |
| 12pm | 4am Fri | 12:00 → 04:00 | asleep in Tokyo |
| 1pm | 5am Fri | 13:00 → 05:00 | asleep in Tokyo |
| 2pm | 6am Fri | 14:00 → 06:00 | asleep in Tokyo |
| 3pm | 7am Fri | 15:00 → 07:00 | awake, not at work |
| 4pm | 8am Fri | 16:00 → 08:00 | awake, not at work |
| 5pm | 9am Fri | 17:00 → 09:00 | awake, not at work |
| 6pm | 10am Fri | 18:00 → 10:00 | awake, not at work |
| 7pm | 11am Fri | 19:00 → 11:00 | awake, not at work |
| 8pm | 12pm Fri | 20:00 → 12:00 | awake, not at work |
| 9pm | 1pm Fri | 21:00 → 13:00 | awake, not at work |
| 10pm | 2pm Fri | 22:00 → 14:00 | asleep in San Diego |
| 11pm | 3pm Fri | 23:00 → 15:00 | asleep in San Diego |
Call times
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
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Questions people ask
What time is it in Tokyo when it is 3:30 pm in San Diego?
7:30 am in Tokyo the next day.
How many hours ahead is Tokyo of San Diego?
Tokyo is 16 hours ahead San Diego. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between San Diego and Tokyo?
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
When does the difference between San Diego and Tokyo change?
San Diego: Clocks go back 1 hour on Sunday, 1st November 2026, at 1:59 am local time (1:00 am after the change). Tokyo does not change its clocks, so the gap shifts by an hour on that date.