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MST to JST conversion table
For Tuesday, November 3, 2026. Rows where both places are inside 9 AM–5 PM are highlighted.
MST
JST
12:00 AM
4:00 PM
1:00 AM
5:00 PM
2:00 AM
6:00 PM
3:00 AM
7:00 PM
4:00 AM
8:00 PM
5:00 AM
9:00 PM
6:00 AM
10:00 PM
7:00 AM
11:00 PM
8:00 AM
12:00 AM (next day)
9:00 AM
1:00 AM (next day)
10:00 AM
2:00 AM (next day)
11:00 AM
3:00 AM (next day)
12:00 PM
4:00 AM (next day)
1:00 PM
5:00 AM (next day)
2:00 PM
6:00 AM (next day)
3:00 PM
7:00 AM (next day)
4:00 PM
8:00 AM (next day)
5:00 PM
9:00 AM (next day)
6:00 PM
10:00 AM (next day)
7:00 PM
11:00 AM (next day)
8:00 PM
12:00 PM (next day)
9:00 PM
1:00 PM (next day)
10:00 PM
2:00 PM (next day)
11:00 PM
3:00 PM (next day)
About these time zones
MST: Mountain Standard Time
Mountain Time (MST/MDT). Denver, Salt Lake City, Albuquerque, Boise and Calgary. MST is UTC−7; in summer most of the region uses MDT, UTC−6. Most of Arizona stays on MST all year.
Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−7 → UTC−6).
JST: Japan Standard Time
Japan Standard Time (JST). All of Japan, including Tokyo and Osaka. JST is UTC+9 all year.
No clock change is scheduled; the offset stays the same all year.
Questions about MST and JST time
What is the time difference between MST and JST?
The current difference is shown at the top of this page. MST uses Mountain Standard Time (MST, UTC−7) as standard time and Mountain Daylight Time (MDT, UTC−6) during daylight saving time; JST uses Japan Standard Time (JST, UTC+9) all year. The difference can change if only one side observes daylight saving time or if their clocks change on different dates. Choose your meeting date in the converter to check the applicable offset.
When it is 9:00 AM in MST, what time is it in JST?
On Tuesday, November 3, 2026, 9:00 AM in MST was 1:00 AM (next day) in JST. The conversion table above shows today’s values.
Do the clocks change in MST or JST?
MST: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−7 → UTC−6). JST does not change its clocks.
Is MST the same as MDT?
MST is the standard-time name and MDT the daylight-saving name for Mountain Time. People often say MST all year; this converter uses the time actually in effect on the date you choose.