San Francisco zone
PDT (GMT-7)
Tokyo zone
GMT+9 (GMT+9)
Difference
16 hours ahead of San Francisco
Business overlap
No 9-5 overlap
Working hours overlap
Each cell is one hour in San Francisco. Filled cells mark when 9 AM – 5 PM in San Francisco and Tokyo both apply.
0 hours per day
- San Francisco
- GMT-7
- Tokyo
- GMT+9
- Difference
- +16h
- Business overlap
- 0h
Hour-by-hour conversion
Each row shows the matching local time in Tokyo for an hour in San Francisco.
| San Francisco | Tokyo | Day | Window |
|---|---|---|---|
| 12:00 AM | 4:00 PM | same day | — |
| 1:00 AM | 5:00 PM | same day | — |
| 2:00 AM | 6:00 PM | same day | — |
| 3:00 AM | 7:00 PM | same day | — |
| 4:00 AM | 8:00 PM | same day | — |
| 5:00 AM | 9:00 PM | same day | — |
| 6:00 AM | 10:00 PM | same day | — |
| 7:00 AM | 11:00 PM | same day | — |
| 8:00 AM | 12:00 AM | next day | — |
| 9:00 AM | 1:00 AM | next day | — |
| 10:00 AM | 2:00 AM | next day | — |
| 11:00 AM | 3:00 AM | next day | — |
| 12:00 PM | 4:00 AM | next day | — |
| 1:00 PM | 5:00 AM | next day | — |
| 2:00 PM | 6:00 AM | next day | — |
| 3:00 PM | 7:00 AM | next day | — |
| 4:00 PM | 8:00 AM | next day | — |
| 5:00 PM | 9:00 AM | next day | — |
| 6:00 PM | 10:00 AM | next day | — |
| 7:00 PM | 11:00 AM | next day | — |
| 8:00 PM | 12:00 PM | next day | — |
| 9:00 PM | 1:00 PM | next day | — |
| 10:00 PM | 2:00 PM | next day | — |
| 11:00 PM | 3:00 PM | next day | — |
Best meeting windows
Standard 9 AM – 5 PM hours in San Francisco and Tokyo do not overlap. Plan calls for early San Francisco morning or late San Francisco evening, and rotate the burden between sides.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting San Francisco time to Tokyo time
San Francisco follows the America/Los_Angeles time zone (currently PDT, GMT-7), while Tokyo follows Asia/Tokyo (currently GMT+9, GMT+9). Tokyo is 16 hours ahead of San Francisco right now.
San Francisco observes daylight saving time, while Tokyo does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
San Francisco
- Spring forward · Sunday, March 8, 2026
- Fall back · Sunday, November 1, 2026
Tokyo
Does not observe daylight saving time.
Reverse this conversion
Tokyo to San Francisco
Open the converter
Plan a meeting between San Francisco and Tokyo
More conversions from San Francisco
Frequently asked questions
- How many hours is San Francisco from Tokyo?
- Tokyo is 16 hours ahead of San Francisco right now.
- What time is 9:00 AM San Francisco in Tokyo?
- 9:00 AM in San Francisco is 1:00 AM (next day) in Tokyo.
- What time is 5:00 PM San Francisco in Tokyo?
- 5:00 PM in San Francisco is 9:00 AM (next day) in Tokyo.
- When do San Francisco and Tokyo business hours overlap?
- Standard 9 AM - 5 PM working hours in San Francisco and Tokyo do not overlap. You will need an early or late call.
- Does daylight saving time change the difference between San Francisco and Tokyo?
- San Francisco observes daylight saving time while Tokyo does not, so the offset between them changes by one hour twice a year.
Local time page
Time in San Francisco
Local time page
Time in Tokyo