Time in MDT and JST
The time difference between Mountain Daylight Time (MDT) and Japan Standard Time (JST) is 15 hours. Japan Standard Time is 15 hours ahead of Mountain Daylight Time.
This means 9am MDT is 12am JST (next day) and 5pm MDT is 8am JST (next day).
Mountain Daylight Time
- The current local time in MDT is 2:08 am (July 9, 2026)
- MDT time zone offset is UTC-06:00
Japan Standard Time
- The current local time in JST is 5:08 am (July 9, 2026)
- JST time zone offset is UTC+09:00
How to convert Mountain Daylight Time to Japan Standard Time?
Add 15 hours to Mountain Daylight Time to get Japan Standard Time.
Time in MDT
00:00
Time in JST
00:00
Use the slider above to convert Mountain Daylight Time to Japan Standard 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
| MDT | JST |
|---|---|
| 12am | 3pm |
| 1am | 4pm |
| 2am | 5pm |
| 3am | 6pm |
| 4am | 7pm |
| 5am | 8pm |
| 6am | 9pm |
| 7am | 10pm |
| 8am | 11pm |
| 9am | 12am |
| 10am | 1am |
| 11am | 2am |
| 12pm | 3am |
| 1pm | 4am |
| 2pm | 5am |
| 3pm | 6am |
| 4pm | 7am |
| 5pm | 8am |
| 6pm | 9am |
| 7pm | 10am |
| 8pm | 11am |
| 9pm | 12pm |
| 10pm | 1pm |
| 11pm | 2pm |