Convert Atlantic Time (AST) to Eastern Time (EST). EST is 1 hour behind AST all year. Updated for the 2026 time zone changes and current daylight saving rules.
Need a city instead? Use the time zone converter.
| AST | EST |
|---|---|
| 12:00 AM | 11:00 PM (prev. day) |
| 1:00 AM | 12:00 AM |
| 2:00 AM | 1:00 AM |
| 3:00 AM | 2:00 AM |
| 4:00 AM | 3:00 AM |
| 5:00 AM | 4:00 AM |
| 6:00 AM | 5:00 AM |
| 7:00 AM | 6:00 AM |
| 8:00 AM | 7:00 AM |
| 9:00 AM | 8:00 AM |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 6:00 PM | 5:00 PM |
| 7:00 PM | 6:00 PM |
| 8:00 PM | 7:00 PM |
| 9:00 PM | 8:00 PM |
| 10:00 PM | 9:00 PM |
| 11:00 PM | 10:00 PM |
This uses Atlantic Time as in Halifax. Puerto Rico and Quebec’s Lower North Shore stay on AST all year.
This uses Eastern Time as in New York and Toronto. Since Nov 1, 2026, Manitoba (UTC−5 all year) is on the same time as EST from November to March, and Atikokan, Ontario stays on EST all year.
EST is 1 hour behind AST all year.
9:00 AM AST is 8:00 AM EST.
12:00 PM AST is 11:00 AM EST.
5:00 PM AST is 4:00 PM EST.
AST is often used loosely for Atlantic Time all year. Strictly, AST is the winter time and ADT is the summer time, from the second Sunday in March to the first Sunday in November. The converter above shows the right one for the date you pick.
This uses Atlantic Time as in Halifax. Puerto Rico and Quebec’s Lower North Shore stay on AST all year.
This uses Eastern Time as in New York and Toronto. Since Nov 1, 2026, Manitoba (UTC−5 all year) is on the same time as EST from November to March, and Atikokan, Ontario stays on EST all year.