Osaka to San Francisco Time Difference

San Francisco is 16 hours behind Osaka. Standard 9 AM–5 PM business hours in Osaka and San Francisco do not overlap, so a live call needs one side outside normal hours. Clocks change on November 1, 2026, which briefly shifts the gap between Osaka and San Francisco — the converter on this page always reflects the correct offset for the date you pick.

• When it's 9:00 AM in Osaka, it's 5:00 PM the previous day in San Francisco.
• When it's 9:00 AM in San Francisco, it's 1:00 AM the next day in Osaka.

San Francisco is currently 16 hours behind Osaka.

Standard 9 AM – 5 PM hours in Osaka and San Francisco do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in Osaka, or a 6–8 PM meeting in San Francisco.

On November 1, 2026, San Francisco shifts for daylight saving. After that, San Francisco will be 17 hours behind Osaka (currently 16 hours behind Osaka). The converter and the tables above always reflect the correct offset for the date you pick.

• Osaka does not observe daylight saving time.
• San Francisco is currently observing daylight saving time.

Frequently asked questions

Is San Francisco ahead of or behind Osaka?

San Francisco is 16 hours behind Osaka.

How many hours behind Osaka is San Francisco?

San Francisco is 16 hours behind Osaka.

What time is 9 AM in Osaka in San Francisco?

9:00 AM in Osaka is 5:00 PM the previous day in San Francisco.

What time is noon in Osaka in San Francisco?

12:00 PM in Osaka is 8:00 PM the previous day in San Francisco.

What time is 5 PM in Osaka in San Francisco?

5:00 PM in Osaka is 1:00 AM in San Francisco. Useful for end-of-day handoffs between the two offices.

What time is 3 PM in Osaka in San Francisco?

3:00 PM in Osaka is 11:00 PM the previous day in San Francisco.

Is Osaka currently observing daylight saving time?

Osaka does not observe daylight saving time — its UTC offset stays the same all year.

Is San Francisco currently observing daylight saving time?

San Francisco is currently observing daylight saving time (summer time).

Do Osaka and San Francisco observe daylight saving?

On November 1, 2026, San Francisco shifts for daylight saving. After that, San Francisco will be 17 hours behind Osaka (currently 16 hours behind Osaka). The converter and the tables above always reflect the correct offset for the date you pick.

When is the best time to call San Francisco from Osaka?

Osaka and San Francisco business hours don't overlap. The closest options are early mornings in Osaka or late evenings, when one side stretches outside 9–5.

When is the best time to call Osaka from San Francisco?

San Francisco and Osaka business hours don't overlap. The closest options are early mornings in San Francisco or late evenings, when one side stretches outside 9–5.

Osaka (JST) to San Francisco (PDT) — how do I convert quickly?

Subtract 16 hours from Osaka local time to get San Francisco local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.

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