AST to EST Converter
Atlantic Time
12:21:45 PM ADT
Sunday, June 28, 2026
1h
1h
Eastern Time
11:21:45 AM EDT
Sunday, June 28, 2026
Eastern Time (EST / EDT) is 1 hour behind Atlantic Time (AST / ADT).
Quick Reference
- Atlantic Time
- ADT (GMT-3)
AST starts on Nov 1, 2026
- Eastern Time
- EDT (GMT-4)
EST starts on Nov 1, 2026
Cities in AST
Cities in EST
Frequently Asked Questions
- What is the difference between AST and EST?
- EST is 1 hour behind AST.
- How do I convert AST to EST?
- To convert from AST to EST, subtract 1 hour. Use the interactive converter on this page to convert specific times.
- What cities are in AST and EST?
- Cities in AST include Halifax, Charlottetown. Cities in EST include New York City, Washington DC, Boston, Philadelphia, Atlanta.