MST to JST time converter
Japan Standard Time (JST) is 16 hours ahead of Mountain Time (MST) in January and 15 hours ahead in July, because daylight saving time shifts the difference. Use the grid below to line up Denver and Tokyo: drag the cursor across the day, and working hours (9 AM–5 PM) are highlighted in every row so you can spot a slot that suits both sides.
Right now it is 03:43 MDT in Denver and 18:43 JST in Tokyo.
2/10 zones · drag the tape, scroll sideways or use the arrow keys; Home jumps back to now.
MST to JST: frequently asked
What is the time difference between MST and JST?
Japan Standard Time (JST) is 16 hours ahead of Mountain Time (MST) in January and 15 hours ahead in July, because daylight saving time shifts the difference.
What time is 9 AM MST in JST?
9:00 AM MST is 1:00 AM JST the next day in January, and 12:00 AM JST the next day in July.
When do working hours overlap between Denver and Tokyo?
In January: Standard 9:00 AM–5:00 PM working hours never overlap. The closest fit is 1:00 AM MST, which is 5:00 PM JST. In July: Standard 9:00 AM–5:00 PM working hours never overlap. The closest fit is 2:00 AM MST, which is 5:00 PM JST.