Meeting time

Best time to meet: San Francisco and Boston

San Francisco is 3 hours behind Boston right now. Their working days overlap for 5 hours: 9 AM to 2 PM in San Francisco, which is 12 PM to 5 PM in Boston. The easiest time to meet is 10:30 AM in San Francisco (1:30 PM in Boston).

Tue 7:59 AMSan Francisco · Pacific Standard TimeTue 10:59 AMBoston · Eastern Standard Time
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Hour by hour

With the clocks as they are on November 10, 2026, San Francisco time on the left. A working day here is 9 AM to 5 PM.

San FranciscoBoston
6 AM9 AMBoston at work
7 AM10 AMBoston at work
8 AM11 AMBoston at work
9 AM12 PMBoth at work
10 AM1 PMBoth at work
11 AM2 PMBoth at work
12 PM3 PMBoth at work
1 PM4 PMBoth at work
2 PM5 PMSan Francisco at work
3 PM6 PMSan Francisco at work
4 PM7 PMSan Francisco at work
5 PM8 PMBoth off
6 PM9 PMBoth off
7 PM10 PMBoth off
8 PM11 PMBoth off
9 PM12 AM next dayBoth off
10 PM1 AM next dayBoth off

When the clocks change

The gap moves when either city changes its clocks. The next twelve months:

DatesSan Francisco isBoth at work (San Francisco time)Easiest (San Francisco / Boston)
Now to March 14, 20273 hours behind9 AM–2 PM (5 hours)10:30 AM / 1:30 PM
March 14, 2027 to March 14, 2027
clocks in Boston go forward		4 hours behind9 AM–1 PM (4 hours)10 AM / 2 PM
March 14, 2027 to November 7, 2027
clocks in San Francisco go forward		3 hours behind9 AM–2 PM (5 hours)10:30 AM / 1:30 PM
November 7, 2027 to November 7, 2027
clocks in Boston go back		2 hours behind9 AM–3 PM (6 hours)11:30 AM / 1:30 PM
November 7, 2027 onward
clocks in San Francisco go back		3 hours behind9 AM–2 PM (5 hours)10:30 AM / 1:30 PM

Boston keeps the same clock as New York.

Questions people ask

What time is it in Boston when it is 9 AM in San Francisco?
12 PM in Boston, while San Francisco is 3 hours behind.
When is the best time for a call between San Francisco and Boston?
10:30 AM in San Francisco, which is 1:30 PM in Boston. Both cities are at work from 9 AM to 2 PM San Francisco time.
Does the time difference between San Francisco and Boston change during the year?
Yes — it changes 4 times in the next twelve months, when the clocks go forward or back; the dates are in the table above.

More cities

New York and San Francisco5 hours of shared working day · meet at 1:30 PM New York timeLondon and San FranciscoNo shared working hours · fairest at 4:30 PM London timeSan Francisco and BangaloreNo shared working hours · fairest at 6 PM San Francisco timeSan Francisco and SingaporeNo shared working hours · fairest at 4:30 PM San Francisco timeSan Francisco and Sydney3 hours of shared working day · meet at 3 PM San Francisco timeSan Francisco and Tokyo1 hour of shared working day · meet at 4 PM San Francisco timeSan Francisco and BerlinNo shared working hours · fairest at 8 AM San Francisco timeSan Francisco and Chicago6 hours of shared working day · meet at 11:30 AM San Francisco timeSan Francisco and DubaiNo shared working hours · fairest at 6:30 AM San Francisco timeSan Francisco and ParisNo shared working hours · fairest at 8 AM San Francisco timeSan Francisco and Toronto5 hours of shared working day · meet at 10:30 AM San Francisco timeSan Francisco and MumbaiNo shared working hours · fairest at 6 PM San Francisco time

Every city from San Francisco · Every city from Boston · All cities · Plan across more than two cities

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