Tokyo to AST time
TokyoJapan2:18:55 AMMon 28 Sept · JST UTC+9
12 hAST is behind
ASTAtlantic Time2:18:55 PMSun 27 Sept · ADT UTC−3Synchronising…
Tokyo and AST time difference
AST is currently 12 h behind Tokyo. Tokyo is on JST (UTC+09:00) and AST is on ADT (UTC−03:00).
The difference can change with daylight saving time. The next change is in AST on Sunday, 1 November 2026, after which AST will be 13 h behind Tokyo.
If it is 9:00 in Tokyo, what time is it in AST?
It is 21:00 in AST (previous day).
What is the best time for a call between Tokyo and AST?
Use the planner above: green hours are within 9:00–17:00 in both places.