AST to JST time converter
Japan Standard Time (JST) is 13 hours ahead of Atlantic Time (AST) in January and 12 hours ahead in July, because daylight saving time shifts the difference. Use the grid below to line up Halifax 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 06:43 ADT in Halifax and 18:43 JST in Tokyo.
2/10 zones · drag the tape, scroll sideways or use the arrow keys; Home jumps back to now.
AST to JST: frequently asked
What is the time difference between AST and JST?
Japan Standard Time (JST) is 13 hours ahead of Atlantic Time (AST) in January and 12 hours ahead in July, because daylight saving time shifts the difference.
What time is 9 AM AST in JST?
9:00 AM AST is 10:00 PM JST in January, and 9:00 PM JST in July.
When do working hours overlap between Halifax and Tokyo?
In January: Standard 9:00 AM–5:00 PM working hours never overlap. The closest fit is 4:00 AM AST, which is 5:00 PM JST. In July: Standard 9:00 AM–5:00 PM working hours never overlap. The closest fit is 5:00 AM AST, which is 5:00 PM JST.