Time zone comparison

Boston ↔ San Francisco

Coordinating across meridians? Boston runs +3 hours ahead of San Francisco. This page shows live clocks, a full 24-hour conversion table, and quick links to find overlapping meeting hours.

Offset: -3 hours (Boston is +3 hours ahead of San Francisco.)

Boston

--:--:--

San Francisco

--:--:--

across the meridian

24-hour conversion table

When it's midnight to midnight in Boston, here's the corresponding time in San Francisco.

Boston (local hour)	Boston	San Francisco
00:00	12:00 AM	9:00 PM-1 day
01:00	1:00 AM	10:00 PM-1 day
02:00	2:00 AM	11:00 PM-1 day
03:00	3:00 AM	12:00 AM
04:00	4:00 AM	1:00 AM
05:00	5:00 AM	2:00 AM
06:00	6:00 AM	3:00 AM
07:00	7:00 AM	4:00 AM
08:00	8:00 AM	5:00 AM
09:00	9:00 AM	6:00 AM
10:00	10:00 AM	7:00 AM
11:00	11:00 AM	8:00 AM
12:00	12:00 PM	9:00 AM
13:00	1:00 PM	10:00 AM
14:00	2:00 PM	11:00 AM
15:00	3:00 PM	12:00 PM
16:00	4:00 PM	1:00 PM
17:00	5:00 PM	2:00 PM
18:00	6:00 PM	3:00 PM
19:00	7:00 PM	4:00 PM
20:00	8:00 PM	5:00 PM
21:00	9:00 PM	6:00 PM
22:00	10:00 PM	7:00 PM
23:00	11:00 PM	8:00 PM

Related comparisons

Boston ↔ New York Boston ↔ Los Angeles Boston ↔ Chicago Boston ↔ Toronto Boston ↔ Vancouver Boston ↔ Mexico City Boston ↔ São Paulo Current time in Boston Current time in San Francisco

Frequently asked questions

What is the time difference between Boston and San Francisco?

Boston is +3 hours ahead of San Francisco.

What time is it in San Francisco when it's 9:00 AM in Boston?

When it's 9:00 AM in Boston, it's 6:00 AM in San Francisco.

Does Boston or San Francisco observe daylight saving time?

Boston is currently on daylight saving time. San Francisco is currently on daylight saving time. Offsets can shift when DST starts or ends.