Cambridge, MA to Seattle, WA: time difference
Seattle, WA is 3 h behind Cambridge, MA. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Cambridge, MA 07:02 7:02 AM Seattle, WA 04:02 4:02 AM You –:–
07:02 7:02 AM
Eastern Daylight Time · UTC-4
☀️ 07:01 · 🌙 17:59
04:02 4:02 AM
Pacific Daylight Time · UTC-7
☀️ 07:33 · 🌙 18:17
·
−3 h
Seattle, WA is 3 h behind Cambridge, MA.
When you, Cambridge, MA and Seattle, WA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Cambridge, MA
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇺🇸 Seattle, WA
21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 Cambridge, MA | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 07:02 | 04:02 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from Cambridge, MA | — | −3 h |
| IANA zone | America/New York | America/Los Angeles |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:01 | 07:33 |
| Sunset | 17:59 | 18:17 |
| Daylight | 10 h 58 min | 10 h 44 min |
| People on this clock | 105,162 | 737,015 |
Compare Cambridge, MA with another city
More comparisons with Cambridge, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Cambridge, MA and Seattle, WA: common questions
How many hours behind Cambridge, MA, is Seattle, WA?
The clocks in Seattle are 3 hours behind those in Cambridge (UTC−7 and UTC−4).
What time is it in Seattle, WA, at the start of the working day in Cambridge, MA?
The working day in Cambridge starts at 9:00 AM; in Seattle it is 6:00 AM at that moment.
What time is it in Seattle, WA, when it is 6:00 PM in Cambridge, MA?
When it is 6:00 PM in Cambridge, it is 3:00 PM in Seattle.
When do working hours in Cambridge, MA, and in Seattle, WA, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Cambridge, which is 9:00 AM to 3:00 PM in Seattle.
When does the date change in Seattle, WA, compared with Cambridge, MA?
The new day starts in Seattle later: until 3:00 AM in Cambridge, it is still the previous day there. From 9:00 PM in Seattle, Cambridge is already on the next day.
Is the time difference between Cambridge, MA, and Seattle, WA, the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 3 hours.
