time difference · live
San Francisco to Tokyo
+16h or +17h ahead in Tokyo. SF-Tokyo overlap nearly impossible during normal hours.
PST/PDT ↔ JST
DST aware
business overlap chart
San Francisco
--:--
Tokyo
--:--
Business hours overlap (24h)
Top row: working hours (09:00–17:00) in San Francisco. Bottom row: working hours in Tokyo. Highlighted columns are when both cities are in business hours simultaneously.
UTC →
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
San Francisco
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Tokyo
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
off-hours
one city working
both cities working
Why this pair matters
SF-Tokyo overlap nearly impossible during normal hours. Common pattern: SF evening (17:00-19:00 PT) = Tokyo morning (09:00-11:00 JST next day).
DST & offset notes
| Period | San Francisco (PST/PDT) | Tokyo (JST) | Difference |
|---|---|---|---|
| Standard time (winter) | PST | JST | 16h offset |
| Daylight saving (summer) | PDT | JST | ~16h offset (varies during DST handover) |
Need a different city pair or a date in the future?
tzdiff lets you compare any IANA timezone pair, jump to a specific date, and copy the converted timestamp.
Open tzdiff
Related city pairs
new york → mumbai · san francisco → london · san francisco → new york · new york → berlin