AST is in use right now in Atlantic Time (UTC−4).
AST is 4 hours behind of GMT (Greenwich Mean Time).
| City | Local time | Difference from AST |
|---|---|---|
| New York | Thu | 1 hour behind |
| Los Angeles | Thu | 4 hours behind |
| London | Thu | 4 hours ahead |
| Paris | Fri | 5 hours ahead |
| Dubai | Fri | 8 hours ahead |
| Mumbai | Fri | 9.5 hours ahead |
| Singapore | Fri | 12 hours ahead |
| Tokyo | Fri | 13 hours ahead |
| Sydney | Fri | 15 hours ahead |
| Johannesburg | Fri | 6 hours ahead |
| São Paulo | Thu | 1 hour ahead |
| Chicago | Thu | 2 hours behind |
Atlantic Time
Atlantic Standard Time (AST)
IANA: America/Puerto_Rico · UTC−4
AST does not use daylight saving time. The offset stays UTC−4 all year.
Sunrise 06:29 · Sunset 17:48
Daylight 11h 19m · Solar noon 12:08
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 30 |
AST is on Atlantic Time (AST, UTC−4). The IANA identifier is America/Puerto_Rico.
No. AST keeps UTC−4 all year, so its time difference with places that do change their clocks shifts by an hour twice a year.