London to AST time
LondonUnited Kingdom6:05:02 PMSun 27 Sept · BST UTC+1
4 hAST is behind
ASTAtlantic Time2:05:02 PMSun 27 Sept · ADT UTC−3Synchronising…
London and AST time difference
AST is currently 4 h behind London. London is on BST (UTC+01:00) and AST is on ADT (UTC−03:00).
The difference can change with daylight saving time. The next change is in London on Sunday, 25 October 2026, after which AST will be 3 h behind London.
If it is 9:00 in London, what time is it in AST?
It is 05:00 in AST.
What is the best time for a call between London and AST?
Use the planner above: green hours are within 9:00–17:00 in both places.