Mason, OH to Seattle, WA: time difference
Seattle, WA is 3 h behind Mason, OH. 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.
Mason, OH 09:19 9:19 AM Seattle, WA 06:19 6:19 AM You –:–
09:19 9:19 AM
Eastern Daylight Time · UTC-4
☀️ 07:52 · 🌙 18:54
06:19 6:19 AM
Pacific Daylight Time · UTC-7
☀️ 07:35 · 🌙 18:15
·
−3 h
Seattle, WA is 3 h behind Mason, OH.
When you, Mason, OH 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
🇺🇸 Mason, OH
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 | 🇺🇸 Mason, OH | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 09:19 | 06:19 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Eastern Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from Mason, OH | — | −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 | 07:52 | 07:35 |
| Sunset | 18:54 | 18:15 |
| Daylight | 11 h 2 min | 10 h 41 min |
| People on this clock | 35,000 | 737,015 |
Compare Mason, OH with another city
More comparisons with Mason, OH: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Mason, OH and Seattle, WA: common questions
How far behind Mason, OH, is Seattle, WA?
Seattle is 3 hours behind Mason: UTC−7 against UTC−4.
If it is 9:00 AM in Mason, OH, what time is it in Seattle, WA?
At 9:00 AM in Mason, clocks in Seattle show 6:00 AM.
If it is 6:00 PM in Mason, OH, what time is it in Seattle, WA?
At 6:00 PM in Mason, clocks in Seattle show 3:00 PM.
When do working hours in Mason, OH, and in Seattle, WA, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Mason, which is 9:00 AM to 3:00 PM in Seattle.
When does the date change in Seattle, WA, compared with Mason, OH?
The new day starts in Seattle later: until 3:00 AM in Mason, it is still the previous day there. From 9:00 PM in Seattle, Mason is already on the next day.
Is the time difference between Mason, OH, 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.
