Longmont, CO to Seattle, WA: time difference
Seattle, WA is 1 h behind Longmont, CO. 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.
Longmont, CO 06:35 6:35 AM Seattle, WA 05:35 5:35 AM You –:–
06:35 6:35 AM
Mountain Daylight Time · UTC-6
☀️ 07:16 · 🌙 18:16
05:35 5:35 AM
Pacific Daylight Time · UTC-7
☀️ 07:35 · 🌙 18:15
·
−1 h
Seattle, WA is 1 h behind Longmont, CO.
When you, Longmont, CO 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
🇺🇸 Longmont, CO
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
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 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Longmont, CO | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 06:35 | 05:35 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Mountain Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-6 | UTC-7 |
| Offset from Longmont, CO | — | −1 h |
| IANA zone | America/Denver | America/Los Angeles |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:16 | 07:35 |
| Sunset | 18:16 | 18:15 |
| Daylight | 11 h | 10 h 41 min |
| People on this clock | 94,341 | 737,015 |
Compare Longmont, CO with another city
More comparisons with Longmont, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Longmont, CO and Seattle, WA: common questions
How many hours behind Longmont, CO, is Seattle, WA?
The clocks in Seattle are 1 hour behind those in Longmont (UTC−7 and UTC−6).
What time is it in Seattle, WA, at the start of the working day in Longmont, CO?
The working day in Longmont starts at 9:00 AM; in Seattle it is 8:00 AM at that moment.
What time is it in Seattle, WA, at the end of the working day in Longmont, CO?
The working day in Longmont ends at 6:00 PM; in Seattle it is 5:00 PM at that moment.
When is a good time to call Seattle, WA, from Longmont, CO?
Between 10:00 AM and 6:00 PM in Longmont – that is 9:00 AM to 5:00 PM in Seattle – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Seattle, WA?
Until 1:00 AM in Longmont, CO, it is still the previous day in Seattle. The other way round, from 11:00 PM in Seattle it is already the next day in Longmont.
Does the time gap between Longmont, CO, and Seattle, WA, change during the year?
No – both places switch to and from summer time on the same dates, so the gap stays 1 hour.
