Philadelphia to San Francisco Time Difference

San Francisco is 3 hours behind Philadelphia. The best window for a call is 12 PM–5 PM in Philadelphia, which is 9 AM–2 PM in San Francisco — a 5-hour overlap inside 9 AM–5 PM on both sides. Philadelphia and San Francisco change their clocks together (or don't change at all), so the time difference between them stays the same all year.

• When it's 9:00 AM in Philadelphia, it's 6:00 AM in San Francisco.
• When it's 9:00 AM in San Francisco, it's 12:00 PM in Philadelphia.

San Francisco is currently 3 hours behind Philadelphia.

The 9 AM – 5 PM business windows in Philadelphia and San Francisco overlap for 5 hours. 12 PM–5 PM in Philadelphia is 9 AM–2 PM in San Francisco. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.

On November 1, 2026, both Philadelphia and San Francisco shift for daylight saving. After that, San Francisco will be 3 hours behind Philadelphia (currently 3 hours behind Philadelphia). The converter and the tables above always reflect the correct offset for the date you pick.

• Philadelphia is currently observing daylight saving time.
• San Francisco is currently observing daylight saving time.

Frequently asked questions

Is San Francisco ahead of or behind Philadelphia?

San Francisco is 3 hours behind Philadelphia.

How many hours behind Philadelphia is San Francisco?

San Francisco is 3 hours behind Philadelphia.

What time is 9 AM in Philadelphia in San Francisco?

9:00 AM in Philadelphia is 6:00 AM in San Francisco.

What time is noon in Philadelphia in San Francisco?

12:00 PM in Philadelphia is 9:00 AM in San Francisco.

What time is 5 PM in Philadelphia in San Francisco?

5:00 PM in Philadelphia is 2:00 PM in San Francisco. Useful for end-of-day handoffs between the two offices.

What time is 3 PM in Philadelphia in San Francisco?

3:00 PM in Philadelphia is 12:00 PM in San Francisco.

Is Philadelphia currently observing daylight saving time?

Philadelphia is currently observing daylight saving time (summer time).

Is San Francisco currently observing daylight saving time?

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

Do Philadelphia and San Francisco observe daylight saving?

On November 1, 2026, both Philadelphia and San Francisco shift for daylight saving. After that, San Francisco will be 3 hours behind Philadelphia (currently 3 hours behind Philadelphia). 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 Philadelphia?

Aim for 12 PM–5 PM in Philadelphia, which is 9 AM–2 PM in San Francisco.

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

Aim for 9 AM–2 PM in San Francisco, which is 12 PM–5 PM in Philadelphia.

Philadelphia (EDT) to San Francisco (PDT) — how do I convert quickly?

Subtract 3 hours from Philadelphia 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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