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JST to MST Conversion

View the JST to MST conversion below. Japan Standard Time is 15 hours ahead of Mountain Standard Time. Convert more time zones by visiting the time zone page and clicking on common time zone conversions. Or use the form at the bottom of this page for easy conversion.

Japan Standard Time

Japan Standard Time is nine hours ahead of the Coordinated Universal Time standard, written as an offset of UTC + 9:00. That means to find the standard time in the zone you must add nine hours to Coordinated Universal Time. Territories observing the time zone are primarily in Asia. It runs through ... read more

Mountain Standard Time

Mountain Standard Time is seven hours behind the Coordinated Universal Time standard, written as an offset of UTC - 7:00. That means to find the standard time in the zone you must subtract seven hours from Coordinated Universal Time. Territories observing the time zone are primarily in North Americ... read more

  Day     Morning/Evening     Night  
JSTMST
 12:00 AM in JST is   09:00 AM in MST* 
 01:00 AM in JST is   10:00 AM in MST* 
 02:00 AM in JST is   11:00 AM in MST* 
 03:00 AM in JST is   12:00 PM in MST* 
 04:00 AM in JST is   01:00 PM in MST* 
 05:00 AM in JST is   02:00 PM in MST* 
 06:00 AM in JST is   03:00 PM in MST* 
 07:00 AM in JST is   04:00 PM in MST* 
 08:00 AM in JST is   05:00 PM in MST* 
 09:00 AM in JST is   06:00 PM in MST* 
 10:00 AM in JST is   07:00 PM in MST* 
 11:00 AM in JST is   08:00 PM in MST* 
 12:00 PM in JST is   09:00 PM in MST* 
 01:00 PM in JST is   10:00 PM in MST* 
 02:00 PM in JST is   11:00 PM in MST* 
 03:00 PM in JST is   12:00 AM in MST* 
 04:00 PM in JST is   01:00 AM in MST* 
 05:00 PM in JST is   02:00 AM in MST* 
 06:00 PM in JST is   03:00 AM in MST* 
 07:00 PM in JST is   04:00 AM in MST* 
 08:00 PM in JST is   05:00 AM in MST* 
 09:00 PM in JST is   06:00 AM in MST* 
 10:00 PM in JST is   07:00 AM in MST* 
 11:00 PM in JST is   08:00 AM in MST* 
 12:00 AM in JST is   09:00 AM in MST* 

A * indicates that daylight saving time (DST) is being observed


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