Time Difference: San Diego to Tokyo
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San Diego vs Tokyo timezone guide
San Diego (US) uses the America/Los_Angeles timezone at UTC-8, while Tokyo (Japan) uses Asia/Tokyo at UTC+9. This means Tokyo is 17 hours ahead of San Diego (based on standard offsets — the live difference above accounts for daylight saving time).
Best meeting times between San Diego and Tokyo
Standard 9-to-5 working hours in San Diego and Tokyo do not overlap. To meet synchronously, one side will need to start early or stay late — see the hour-by-hour planner below for the least disruptive options.
Hour-by-hour planner
| San Diego | Tokyo | Status |
|---|---|---|
| 6am | 10pm | San Diego early, Tokyo late evening |
| 7am | 11pm | San Diego early, Tokyo late evening |
| 8am | 12am | San Diego early, Tokyo asleep |
| 9am | 1am | San Diego working hours, Tokyo asleep |
| 10am | 2am | San Diego working hours, Tokyo asleep |
| 11am | 3am | San Diego working hours, Tokyo asleep |
| 12pm | 4am | San Diego working hours, Tokyo asleep |
| 1pm | 5am | San Diego working hours, Tokyo asleep |
| 2pm | 6am | One side outside 9-to-5 but still awake |
| 3pm | 7am | One side outside 9-to-5 but still awake |
| 4pm | 8am | One side outside 9-to-5 but still awake |
| 5pm | 9am | One side outside 9-to-5 but still awake |
| 6pm | 10am | One side outside 9-to-5 but still awake |
| 7pm | 11am | One side outside 9-to-5 but still awake |
| 8pm | 12pm | One side outside 9-to-5 but still awake |
| 9pm | 1pm | One side outside 9-to-5 but still awake |
| 10pm | 2pm | San Diego late evening, Tokyo working hours |
Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.
Daylight saving time between San Diego and Tokyo
San Diego observes daylight saving time, but Tokyo does not. That means the difference between the two cities changes seasonally — by one hour, around San Diego's transition dates.
- Dec 31 → Mar 8San Diego is 17 hours behind Tokyo
- Mar 8 → Nov 1San Diego is 16 hours behind Tokyo
- Nov 1 → Dec 31San Diego is 17 hours behind Tokyo
Distance between San Diego and Tokyo
San Diego and Tokyo are 8,989 km apart along the great-circle route. A direct flight takes roughly ~11h 34m, depending on aircraft type, winds, and routing.