May 21, 1818
Dover-Foxcroft
May 21, 1986
Lübeck
May 21, 1889
May 21, 1992
Sydney
May 21, 1951
Havana
May 21, 1969
May 21, 1981
Belfast
May 21, 1960
Copenhagen
May 21, 1964
Velikii Zhitin
May 21, 1928
Desio
May 21, 1897
Yambol
May 21, 1784
Legnica
May 21, 1915
Madison
May 21, 1948