O'Fallon, IL to Seattle, WA: time difference
Seattle, WA is 2 h behind O'Fallon, IL. 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.
O'Fallon, IL 18:28 6:28 PM Seattle, WA 16:28 4:28 PM You –:–
18:28 6:28 PM
Central Daylight Time · UTC-5
☀️ 07:15 · 🌙 18:15
16:28 4:28 PM
Pacific Daylight Time · UTC-7
☀️ 07:37 · 🌙 18:12
·
−2 h
Seattle, WA is 2 h behind O'Fallon, IL.
When you, O'Fallon, IL 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
🇺🇸 O'Fallon, IL
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
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 21 9 PM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 O'Fallon, IL | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 18:28 | 16:28 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Central Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-5 | UTC-7 |
| Offset from O'Fallon, IL | — | −2 h |
| IANA zone | America/Chicago | America/Los Angeles |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:15 | 07:37 |
| Sunset | 18:15 | 18:12 |
| Daylight | 10 h 59 min | 10 h 34 min |
| People on this clock | 94,074 | 737,015 |
Compare O'Fallon, IL with another city
More comparisons with O'Fallon, IL: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
O'Fallon, IL and Seattle, WA: common questions
How far behind O'Fallon, IL, is Seattle, WA?
Seattle is 2 hours behind O'Fallon: UTC−7 against UTC−5.
What time is it in Seattle, WA, when it is 9:00 AM in O'Fallon, IL?
When it is 9:00 AM in O'Fallon, it is 7:00 AM in Seattle.
What time is it in Seattle, WA, at the end of the working day in O'Fallon, IL?
The working day in O'Fallon ends at 6:00 PM; in Seattle it is 4:00 PM at that moment.
Is there a time when both O'Fallon, IL, and Seattle, WA, are at work?
Yes: from 11:00 AM to 6:00 PM in O'Fallon (9:00 AM to 4:00 PM in Seattle), the working days (9:00 AM–6:00 PM) overlap.
Until what time in O'Fallon, IL, is it still yesterday in Seattle, WA?
Before 2:00 AM in O'Fallon, the date in Seattle has not changed yet. From 10:00 PM in Seattle, it is already the next day in O'Fallon.
Is the time difference between O'Fallon, IL, and Seattle, WA, the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 2 hours.
