| Country | Capital |
| Aruba | name: Oranjestad geographic coordinates: 12 31 N, 70 02 W time difference: UTC-4 (1 hour ahead of Washington, DC during Standard Time) |
| Ashmore and Cartier Islands | void |
| Atlantic Ocean | void |
| Australia | name: Canberra geographic coordinates: 35 17 S, 149 13 E time difference: UTC+10 (15 hours ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins first Sunday in October; ends first Sunday in April note: Australia is divided into three time zones |
| Austria | name: Vienna geographic coordinates: 48 12 N, 16 22 E time difference: UTC+1 (6 hours ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins last Sunday in March; ends last Sunday in October |
| Azerbaijan | name: Baku (Baki, Baky) geographic coordinates: 40 23 N, 49 52 E time difference: UTC+4 (9 hours ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins last Sunday in March; ends last Sunday in October |
| Bahamas, The | name: Nassau geographic coordinates: 25 05 N, 77 21 W time difference: UTC-5 (same time as Washington, DC during Standard Time) daylight saving time: +1hr, begins second Sunday in March; ends first Sunday in November |
| Bahrain | name: Manama geographic coordinates: 26 14 N, 50 34 E time difference: UTC+3 (8 hours ahead of Washington, DC during Standard Time) |
| Bangladesh | name: Dhaka geographic coordinates: 23 43 N, 90 24 E time difference: UTC+6 (11 hours ahead of Washington, DC during Standard Time) |
| Barbados | name: Bridgetown geographic coordinates: 13 06 N, 59 37 W time difference: UTC-4 (1 hour ahead of Washington, DC during Standard Time) |
| Belarus | name: Minsk geographic coordinates: 53 54 N, 27 34 E time difference: UTC+2 (7 hours ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins last Sunday in March and will continue throughout 2011 |
| Belgium | name: Brussels geographic coordinates: 50 50 N, 4 20 E time difference: UTC+1 (6 hours ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins last Sunday in March; ends last Sunday in October |
| Belize | name: Belmopan geographic coordinates: 17 15 N, 88 46 W time difference: UTC-6 (1 hour behind Washington, DC during Standard Time) |