MST to JST Converter
Convert Mountain Time (MST) to Japan Standard Time (JST).
Right now, Japan Standard Time (JST) is 15 hours ahead of Mountain Time (MDT). (MDT is UTC-6, JST is UTC+9.)
Common MST → JST times
MST to JST conversion table
| Mountain Time (MST) | Japan Standard Time (JST) |
|---|---|
| 12:00 AM | 3:00 PM |
| 1:00 AM | 4:00 PM |
| 2:00 AM | 5:00 PM |
| 3:00 AM | 6:00 PM |
| 4:00 AM | 7:00 PM |
| 5:00 AM | 8:00 PM |
| 6:00 AM | 9:00 PM |
| 7:00 AM | 10:00 PM |
| 8:00 AM | 11:00 PM |
| 9:00 AM | 12:00 AM (next day) |
| 10:00 AM | 1:00 AM (next day) |
| 11:00 AM | 2:00 AM (next day) |
| 12:00 PM | 3:00 AM (next day) |
| 1:00 PM | 4:00 AM (next day) |
| 2:00 PM | 5:00 AM (next day) |
| 3:00 PM | 6:00 AM (next day) |
| 4:00 PM | 7:00 AM (next day) |
| 5:00 PM | 8:00 AM (next day) |
| 6:00 PM | 9:00 AM (next day) |
| 7:00 PM | 10:00 AM (next day) |
| 8:00 PM | 11:00 AM (next day) |
| 9:00 PM | 12:00 PM (next day) |
| 10:00 PM | 1:00 PM (next day) |
| 11:00 PM | 2:00 PM (next day) |
Times reflect the current date and update automatically for daylight saving time.
Converting Mountain Time to Japan Standard Time
Mountain Time (MST) covers Denver, Salt Lake City, while Japan Standard Time (JST) covers Tokyo, Osaka. The current offset between them is 15 hours, with JST ahead of MST. Because at least one of these zones observes daylight saving time, the exact difference can shift by an hour at certain times of year — this page recalculates automatically so it is always current.
Frequently asked questions
What is the time difference between MST and JST?
JST (Japan Standard Time) is currently 15 hours ahead of MST (Mountain Time).
Is JST ahead of or behind MST?
JST is 15 hours ahead of MST as of the current date.
What is 9:00 AM MST in JST?
9:00 AM MST is 12:00 AM (next day) in JST.
Does Mountain Time (MST) observe daylight saving time?
Yes. Mountain Time switches to MDT during daylight saving time, and this converter adjusts the offset automatically. It is currently on MDT.