Time in JST and COST
The time difference between Japan Standard Time (JST) and Colombia Summer Time (COST) is 13 hours. Colombia Summer Time is 13 hours behind Japan Standard Time.
This means 9am JST is 8pm COST (previous day) and 5pm JST is 4am COST.
Japan Standard Time
- The current local time in JST is 4:08 am (July 9, 2026)
- JST time zone offset is UTC+09:00
Colombia Summer Time
- The current local time in COST is 11:08 pm (July 8, 2026)
- COST time zone offset is UTC-04:00
How to convert Japan Standard Time to Colombia Summer Time?
Subtract 13 hours from Japan Standard Time to get Colombia Summer Time.
Time in JST
00:00
Time in COST
00:00
Use the slider above to convert Japan 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
| JST | COST |
|---|---|
| 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 | 12am |
| 2pm | 1am |
| 3pm | 2am |
| 4pm | 3am |
| 5pm | 4am |
| 6pm | 5am |
| 7pm | 6am |
| 8pm | 7am |
| 9pm | 8am |
| 10pm | 9am |
| 11pm | 10am |