Era
20e siècle
2
20th century
2
21e siècle
2
1800-1859
1
1828-1906
1
1856-1939
1
1882-1945
1
1900-1999
1
1901-1910 (Édouard VII)
1
1901-1936
1
1910-1936 (George V)
1
1945-
1
1971-
1
1992
1
2000-2099
1
2019
1
21st century
1
Edward VII, 1901-1910
1
George V, 1910-1936
1
Philadelphia
1
Since 1945
1
Since 1971
1