Offset
The time difference between Mountain Time and Colombia Time is 1 hour.
Mountain Time (MDT) is behind Colombia Time (COT).
MDT: UTC-6
COT: UTC-5
Mountain Time is currently observing daylight saving time; Colombia Time is not.
When to schedule
Business-hours overlap: 9 AM–4 PM in Mountain Time (10 AM–5 PM in Colombia Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 12:00 PM Mountain Time (1:00 PM Colombia Time).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
Colombia
- New Year's DayThu, Jan 1
- EpiphanyMon, Jan 12
- Saint Joseph's DayMon, Mar 23
- Maundy ThursdayThu, Apr 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- Ascension DayMon, May 18
- Corpus ChristiMon, Jun 8
- Sacred HeartMon, Jun 15
- Saint Peter and Saint PaulMon, Jun 29
- Declaration of IndependenceMon, Jul 20
- Battle of BoyacáFri, Aug 7
- Assumption of MaryMon, Aug 17
- Columbus DayMon, Oct 12
- All Saints’ DayMon, Nov 2
- Independence of CartagenaMon, Nov 16
- Immaculate ConceptionTue, Dec 8
- Christmas DayFri, Dec 25
About these zones
Mountain Time is also known as MST, or MDT. To call United States, dial +1.
Colombia Time is also known as COT. To call Colombia, dial +57.
Colombia Time is approximately 3,100 miles southeast of Mountain Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| MST | COT | Day |
|---|---|---|
| 12:00 am | 1:00 am | Same day |
| 1:00 am | 2:00 am | Same day |
| 2:00 am | 3:00 am | Same day |
| 3:00 am | 4:00 am | Same day |
| 4:00 am | 5:00 am | Same day |
| 5:00 am | 6:00 am | Same day |
| 6:00 am | 7:00 am | Same day |
| 7:00 am | 8:00 am | Same day |
| 8:00 am | 9:00 am | Same day |
| 9:00 am | 10:00 am | Same day |
| 10:00 am | 11:00 am | Same day |
| 11:00 am | 12:00 pm | Same day |
| 12:00 pm | 1:00 pm | Same day |
| 1:00 pm | 2:00 pm | Same day |
| 2:00 pm | 3:00 pm | Same day |
| 3:00 pm | 4:00 pm | Same day |
| 4:00 pm | 5:00 pm | Same day |
| 5:00 pm | 6:00 pm | Same day |
| 6:00 pm | 7:00 pm | Same day |
| 7:00 pm | 8:00 pm | Same day |
| 8:00 pm | 9:00 pm | Same day |
| 9:00 pm | 10:00 pm | Same day |
| 10:00 pm | 11:00 pm | Same day |
| 11:00 pm | 12:00 am | +1 day |
Daylight saving time
Mountain Time observes daylight saving time; Colombia Time does not. The offset between the two zones changes when Mountain Time transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:34 AM
- Sunset
- 8:25 PM
- Day length
- 14h 51m
- Sunrise
- 5:44 AM
- Sunset
- 6:07 PM
- Day length
- 12h 23m
Daylight overlap: 11h 33m — 5:34 AM–5:07 PM in Mountain Time (6:34 AM–6:07 PM in Colombia Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Mountain Time
Cities in Colombia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Airports in Colombia Time
- BOG
- CLO
- EOH
- MDE
Related conversions
Common conversions
- What is 9:00 am MST in COT?
- 9:00 am MST is 10:00 am COT.
- What is 12:00 pm MST in COT?
- 12:00 pm MST is 1:00 pm COT.
- What is 12:30 pm MST in COT?
- 12:30 pm MST is 1:30 pm COT.
- What is 2:00 pm MST in COT?
- 2:00 pm MST is 3:00 pm COT.
- What is 5:00 pm MST in COT?
- 5:00 pm MST is 6:00 pm COT.
- What is 11:30 pm MST in COT?
- 11:30 pm MST is 12:30 am COT, the next day.