Time in BTT and COST
The time difference between Bhutan Time (BTT) and Colombia Summer Time (COST) is 10 hours. Colombia Summer Time is 10 hours behind Bhutan Time.
This means 9am BTT is 11pm COST (previous day) and 5pm BTT is 7am COST.
Bhutan Time
- The current local time in BTT is 12:42 pm (September 2, 2026)
- BTT time zone offset is UTC+06:00
Colombia Summer Time
- The current local time in COST is 10:42 am (September 2, 2026)
- COST time zone offset is UTC-04:00
How to convert Bhutan Time to Colombia Summer Time?
Subtract 10 hours from Bhutan Time to get Colombia Summer Time.
Time in BTT
00:00
Time in COST
00:00
Use the slider above to convert Bhutan Time to Colombia Summer Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| BTT | COST |
|---|---|
| 12am | 2pm |
| 1am | 3pm |
| 2am | 4pm |
| 3am | 5pm |
| 4am | 6pm |
| 5am | 7pm |
| 6am | 8pm |
| 7am | 9pm |
| 8am | 10pm |
| 9am | 11pm |
| 10am | 12am |
| 11am | 1am |
| 12pm | 2am |
| 1pm | 3am |
| 2pm | 4am |
| 3pm | 5am |
| 4pm | 6am |
| 5pm | 7am |
| 6pm | 8am |
| 7pm | 9am |
| 8pm | 10am |
| 9pm | 11am |
| 10pm | 12pm |
| 11pm | 1pm |