Longmont, CO to Santiago: time difference
Santiago is 3 h ahead of 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 10:16 10:16 AM Santiago 13:16 1:16 PM You –:–
10:16 10:16 AM
Mountain Daylight Time · UTC-6
☀️ 07:16 · 🌙 18:16
13:16 1:16 PM
Chile Summer Time · UTC-3
☀️ 06:57 · 🌙 19:59
·
+3 h
Santiago is 3 h ahead of Longmont, CO.
When you, Longmont, CO and Santiago 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
🇨🇱 Santiago
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 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Longmont, CO | 🇨🇱 Santiago |
|---|---|---|
| Local time | 10:16 | 13:16 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Mountain Daylight Time | Chile Summer Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Longmont, CO | — | +3 h |
| IANA zone | America/Denver | America/Santiago |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC-4, Apr 3, 23:00 |
| Sunrise | 07:16 | 06:57 |
| Sunset | 18:16 | 19:59 |
| Daylight | 11 h | 13 h 2 min |
| People on this clock | 94,341 | 6,139,087 |
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 Santiago: common questions
How many hours ahead of Longmont, CO, is Santiago?
The clocks in Santiago are 3 hours ahead of those in Longmont (UTC−3 and UTC−6).
What time is it in Santiago at the start of the working day in Longmont, CO?
The working day in Longmont starts at 9:00 AM; in Santiago it is 12:00 PM at that moment.
What time is it in Santiago at the end of the working day in Longmont, CO?
The working day in Longmont ends at 6:00 PM; in Santiago it is 9:00 PM at that moment.
When do working hours in Longmont, CO, and in Santiago overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:00 PM in Longmont, which is 12:00 PM to 6:00 PM in Santiago.
When is it already the next day in Santiago?
From 9:00 PM in Longmont, CO, it is already the next day in Santiago. The other way round, until 3:00 AM in Santiago it is still the previous day in Longmont.
Does the time difference between Longmont, CO, and Santiago change?
Yes. Both places change their clocks, but on different dates. From November 1, 2026, Santiago will be 4 hours ahead of Longmont.
