AST to JST Converter
Atlantic Time
4:35:41 AM ADT
Thursday, May 14, 2026
12h
12h
Japan Time
4:35:41 PM JST
Thursday, May 14, 2026
Japan Time (JST) is 12 hours ahead of Atlantic Time (AST / ADT).
Quick Reference
- Atlantic Time
- ADT (GMT-3)
AST starts on Nov 1, 2026
- Japan Time
- JST (GMT+9)
No Daylight Saving Time
Cities in AST
Cities in JST
Frequently Asked Questions
- What is the difference between AST and JST?
- JST is 12 hours ahead of AST.
- How do I convert AST to JST?
- To convert from AST to JST, add 12 hours. Use the interactive converter on this page to convert specific times.
- What cities are in AST and JST?
- Cities in AST include Halifax, Charlottetown. Cities in JST include Tokyo, Osaka, Yokohama, Kyoto, Nagoya.