Time in CHAST and COST
The time difference between Chatham Standard Time (CHAST) and Colombia Summer Time (COST) is 16 hours 45 minutes. Colombia Summer Time is 16 hours 45 minutes behind Chatham Standard Time.
This means 9am CHAST is 4:15pm COST (previous day) and 5pm CHAST is 12:15am COST.
Chatham Standard Time
- The current local time in CHAST is 11:36 am (June 4, 2026)
- CHAST time zone offset is UTC+12:45
Colombia Summer Time
- The current local time in COST is 2:51 am (June 4, 2026)
- COST time zone offset is UTC-04:00
How to convert Chatham Standard Time to Colombia Summer Time?
Subtract 16 hours 45 minutes from Chatham Standard Time to get Colombia Summer Time.
Time in CHAST
00:00
Time in COST
00:00
Use the slider above to convert Chatham Standard 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
| CHAST | COST |
|---|---|
| 12am | 7:15am |
| 1am | 8:15am |
| 2am | 9:15am |
| 3am | 10:15am |
| 4am | 11:15am |
| 5am | 12:15pm |
| 6am | 1:15pm |
| 7am | 2:15pm |
| 8am | 3:15pm |
| 9am | 4:15pm |
| 10am | 5:15pm |
| 11am | 6:15pm |
| 12pm | 7:15pm |
| 1pm | 8:15pm |
| 2pm | 9:15pm |
| 3pm | 10:15pm |
| 4pm | 11:15pm |
| 5pm | 0:15am |
| 6pm | 1:15am |
| 7pm | 2:15am |
| 8pm | 3:15am |
| 9pm | 4:15am |
| 10pm | 5:15am |
| 11pm | 6:15am |