The military time zone Q ("Quebec") is UTC−4. A time in this zone is written with the letter as a suffix, for example 1421Q.
America/Barbados (AST)America/Boa VistaAmerica/Campo GrandeAmerica/CaracasAmerica/CuiabaAmerica/Detroit (EDT)America/Grand Turk (EDT)America/GuyanaAmerica/Havana (CDT)America/Indiana/Indianapolis (EDT)America/Indiana/Marengo (EDT)America/Indiana/Petersburg (EDT)America/Indiana/Vevay (EDT)America/Indiana/Vincennes (EDT)America/Indiana/Winamac (EDT)America/Iqaluit (EDT)America/Kentucky/Louisville (EDT)America/Kentucky/Monticello (EDT)America/La PazAmerica/ManausAmerica/Martinique (AST)America/New York (EDT)America/Port-au-Prince (EDT)America/Porto VelhoAmerica/Puerto Rico (AST)America/Santo Domingo (AST)America/Toronto (EDT)EST5EDT (EDT)
| City | Local time | Difference from Quebec (Q) |
|---|---|---|
| New York | Thu | 4 hours behind |
| Los Angeles | Thu | 7 hours behind |
| London | Thu | 1 hour ahead |
| Paris | Thu | 2 hours ahead |
| Dubai | Thu | 4 hours ahead |
| Mumbai | Thu | 5.5 hours ahead |
| Singapore | Fri | 8 hours ahead |
| Tokyo | Fri | 9 hours ahead |
| Sydney | Fri | 10 hours ahead |
| Johannesburg | Thu | 2 hours ahead |
| São Paulo | Thu | 3 hours behind |
| Chicago | Thu | 5 hours behind |
Quebec (Q) is the NATO letter for UTC−4. Military and aviation messages write a time in this zone as four digits plus the letter, for example 0900Q for 09:00 at UTC−4.
Civil time zones on UTC−4 right now include America/Barbados, America/Boa Vista, America/Campo Grande, America/Caracas, America/Cuiaba, America/Detroit, America/Grand Turk, America/Guyana.
| 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 | 31 |