Seattle, WA to Casper, WY: time difference
Casper, WY is 1 h ahead of Seattle, WA. 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.
Seattle, WA 14:49 2:49 PM Casper, WY 15:49 3:49 PM You –:–
14:49 2:49 PM
Pacific Daylight Time · UTC-7
☀️ 07:33 · 🌙 18:17
15:49 3:49 PM
Mountain Daylight Time · UTC-6
☀️ 07:23 · 🌙 18:19
·
+1 h
Casper, WY is 1 h ahead of Seattle, WA.
When you, Seattle, WA and Casper, WY are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Seattle, WA
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
🇺🇸 Casper, WY
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Seattle, WA | 🇺🇸 Casper, WY |
|---|---|---|
| Local time | 14:49 | 15:49 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Pacific Daylight Time | Mountain Daylight Time |
| UTC offset | UTC-7 | UTC-6 |
| Offset from Seattle, WA | — | +1 h |
| IANA zone | America/Los Angeles | America/Denver |
| Daylight saving | On summer time → UTC-8, Nov 1, 01:00 | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 07:33 | 07:23 |
| Sunset | 18:17 | 18:19 |
| Daylight | 10 h 44 min | 10 h 57 min |
| People on this clock | 737,015 | 58,763 |
Compare Seattle, WA with another city
More comparisons with Seattle, WA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Seattle, WA and Casper, WY: common questions
How far ahead of Seattle, WA, is Casper, WY?
Casper is 1 hour ahead of Seattle: UTC−6 against UTC−7.
If it is 9:00 AM in Seattle, WA, what time is it in Casper, WY?
At 9:00 AM in Seattle, clocks in Casper show 10:00 AM.
If it is 6:00 PM in Seattle, WA, what time is it in Casper, WY?
At 6:00 PM in Seattle, clocks in Casper show 7:00 PM.
Is there a time when both Seattle, WA, and Casper, WY, are at work?
Yes: from 9:00 AM to 5:00 PM in Seattle (10:00 AM to 6:00 PM in Casper), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Casper, WY, compared with Seattle, WA?
The new day starts in Casper earlier: at 11:00 PM in Seattle it is already midnight there. Until 1:00 AM in Casper, Seattle is still on the previous day.
Does the time gap between Seattle, WA, and Casper, WY, change during the year?
No – both places switch to and from summer time on the same dates, so the gap stays 1 hour.
