MST to JST Converter

Converting Mountain Standard Time to Japan Standard Time

Mountain Standard Time (MST) and Japan Standard Time (JST) are separated by a 16 hours time difference. JST is 16 hours ahead of MST. MST is UTC-7, used in United States, Canada, while JST is UTC+9, used in Japan.

When converting from MST to JST, the key reference points to remember are: 9:00 AM MST equals 1:00 AM JST, 12:00 PM noon MST equals 4:00 AM JST, and 5:00 PM MST equals 9:00 AM JST. The conversion table above shows every hour of the day mapped between these two time zones.

Scheduling Across MST and JST

For professionals scheduling meetings between MST and JST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 16 hours difference, the window of overlap may be limited, making early morning or late evening calls necessary for one party. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.

Daylight Saving Time Considerations

MST observes Daylight Saving Time, switching to MDT (UTC-6) during summer months. JST does not observe DST, staying at UTC+9 year-round. During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.