| Country | Capital |
| Benin | name: Porto-Novo (official capital) geographic coordinates: 6 29 N, 2 37 E time difference: UTC+1 (6 hours ahead of Washington, DC during Standard Time) note: Cotonou (seat of government) |
| Bermuda | name: Hamilton geographic coordinates: 32 17 N, 64 47 W time difference: UTC-4 (1 hour ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins second Sunday in March; ends first Sunday in November |
| Bhutan | name: Thimphu geographic coordinates: 27 29 N, 89 36 E time difference: UTC+6 (11 hours ahead of Washington, DC during Standard Time) |
| Bolivia | name: La Paz (administrative capital) geographic coordinates: 16 30 S, 68 09 W time difference: UTC-4 (1 hour ahead of Washington, DC during Standard Time) note: Sucre (constitutional capital) |
| Bosnia and Herzegovina | name: Sarajevo geographic coordinates: 43 52 N, 18 25 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 |
| Botswana | name: Gaborone geographic coordinates: 24 45 S, 25 55 E time difference: UTC+2 (7 hours ahead of Washington, DC during Standard Time) |
| Bouvet Island | void |
| Brazil | name: Brasilia geographic coordinates: 15 47 S, 47 55 W time difference: UTC-3 (2 hours ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins third Sunday in October; ends last Sunday in February note: Brazil is divided into three time zones, including one for the Fernando de Noronha Islands |
| British Indian Ocean Territory | void |
| British Virgin Islands | name: Road Town geographic coordinates: 18 27 N, 64 37 W time difference: UTC-4 (1 hour ahead of Washington, DC during Standard Time) |
| Brunei | name: Bandar Seri Begawan geographic coordinates: 4 53 N, 114 56 E time difference: UTC+8 (13 hours ahead of Washington, DC during Standard Time) |
| Bulgaria | name: Sofia geographic coordinates: 42 41 N, 23 19 E time difference: UTC+2 (7 hours ahead of Washington, DC during Standard Time) daylight saving time: +1hr, begins last Sunday in March; ends last Sunday in October |