MDT to JST Time Zone Converter — Mountain to Japan

Convert between any time zones worldwide. Free and accurate time zone converter with DST support.

Edit time or date on either side — all cards update instantly.

From

UTC...

Mountain Standard Time

To Same day

UTC...

Japan Standard Time

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Upcoming clock change (daylight saving)

From (Mountain Standard Time): Next DST change: November 1, 2026 — MDT shifts to MST (UTC-7)

MDT to JST Conversion Chart

Last updated: April 2026

Today's reference — every 3 hours. DST is applied automatically.

MDT Time	JST Time
12:00 AM	3:00 PM
3:00 AM	6:00 PM
6:00 AM	9:00 PM
9:00 AM	12:00 AM (+1 day)
12:00 PM	3:00 AM (+1 day)
3:00 PM	6:00 AM (+1 day)
6:00 PM	9:00 AM (+1 day)
9:00 PM	12:00 PM (+1 day)

Popular Timezone Conversions

CST to EST PST to EST MST to EST GMT to EST JST to EST GST to EST IST to EST EST to GMT

About MDT to JST Conversion

Last updated: April 2026

Converting time between MST and JST requires understanding their time zone offsets and any daylight saving time adjustments. MST (MDT) operates at UTC-6, while JST (JST) is set to UTC+9. This means JST is 15 hours ahead MST. For example, when it's 7:01 AM MDT on May 5, 2026, it's 10:01 PM JST in JST. America/Denver observes daylight saving time, switching between MST (UTC-7) and MDT (UTC-6), while Asia/Tokyo does not observe daylight saving time. Use this converter to quickly find the equivalent time in JST for any time in MST, whether you're scheduling meetings, planning travel, or coordinating with teams across different time zones.

How to Use the Time Zone Converter

Last updated: April 2026

Select your source timezone from the "From timezone" dropdown (use search to find quickly)
Enter the date and time you want to convert (or click "Today" and "Now" for current time)
Select your target timezone from the "To timezone" dropdown
The conversion updates automatically as you change inputs - no button needed!
Use "Copy" button to copy the converted time, or use presets for quick conversions

More Conversions from MDT

MDT to EST MDT to CST MDT to MST MDT to PST MDT to AKST MDT to HST MDT to GMT MDT to CET MDT to EET MDT to MSK MDT to IST MDT to CST-CHINA MDT to HKT MDT to SGT MDT to GST MDT to AEST MDT to AWST MDT to NZST MDT to UTC MDT to ART MDT to BRT MDT to PHT MDT to BDT MDT to KST MDT to SAST MDT to ICT MDT to EAT MDT to WAT MDT to PKT

Frequently Asked Questions

Last updated: April 2026

What is the time difference between MDT and JST?

The time difference between MDT and JST is 15 hours. JST is 15 hours ahead MDT.

Is JST ahead of or behind MDT?

JST is ahead of MDT by 15 hours. When it's 9 AM in MDT, it's 12:00 AM in JST.

How many hours do you add to MDT to get JST?

You add 15 hours to MDT to get JST. For example, 9 AM MDT + 15 hours = 12:00 AM JST.

Does the MDT to JST time difference change during Daylight Saving Time?

Yes, the time difference can change during Daylight Saving Time (DST). MDT observes DST, which can affect the time difference during the transition periods in spring and fall.

What is 9 AM MDT in JST?

9 AM MDT is 12:00 AM JST. This conversion accounts for the 15-hour time difference between the two timezones.

Is MDT the same throughout the year when converting to JST?

No, the conversion between MDT and JST can vary during the year due to Daylight Saving Time. The time difference may change by 1 hour during DST transition periods (typically March and November), so always use a current timezone converter for accurate conversions.

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