Time difference between Seattle and Boston

Boston is 3 hours ahead of Seattle.

United States · Pacific Standard Time

4:45 PM

Wednesday, November 11, 2026

United States · Eastern Standard Time

7:45 PM

Wednesday, November 11, 2026

Seattle to Boston time converter

Green rows are office hours in both places; light green rows are when both are awake.

What is the time difference between Seattle and Boston?

Boston is 3 hours ahead of Seattle. Seattle is on UTC−8 and Boston is on UTC−5.

What time is it in Boston when it is 9 AM in Seattle?

When it is 9:00 AM in Seattle, it is 12:00 PM in Boston.

When is the best time to call Boston from Seattle?

The best time to call or meet is 9:00 AM–3:00 PM in Seattle (12:00 PM–6:00 PM in Boston), when both places are in normal office hours.

Which days are working days in both Seattle and Boston?

Both Seattle and Boston usually work Monday to Friday.

Does the time difference between Seattle and Boston change?

No. Neither Seattle nor Boston changes its clocks in a way that affects the difference, so it stays the same all year.

Seattle is 3 hours behind Boston. More: time in Seattle · time in Boston