World Sovereigns, 1978

CountrySovereignBornAcceded
SwazilandKing Sobhuza II22 July189910 December1899
JapanEmperor Hirohito29 April190125 December1926
Liechtenstein Prince Franz Joseph II 16 August 1906 25 July 1938
IranShah Mohammed Reza Pahlavi26 October191916 September1941
ThailandKing Bhumibol Adulyadej5 December19279 June1946
Netherlands Queen Juliana30 April 19094 Septemeber1948
MonacoPrince Rainier III 31 May 1923 9 May 1949
Belgium King Baudouin I 7 September1930 16 July 1951
United Kingdom Queen Elizabeth II 21 April 1926 6 February 1952
JordanKing Hussein14 November193511 August1952
Norway King Olav V 2 July 1903 21 September 1957
LesothoKing Moshoeshoe II2 May19381960
MoroccoKing Hassan II9 July19293 March1961
BahrainEmir Isa ibn Salman Al Khalifa3 June19332 November1961
SamoaMalietoa Tanumafili II4 January191315 April1962
Vatican CityPope Paul VI26 September189721 June1963
Luxembourg Grand Duke Jean 5 January 1921 12 November 1964
TongaKing Tāufaʻāhau Tupou IV4 July191816 December1965
OmanSultan Qabus bin Said18 November194223 July1970
United Arab EmiratesPresident Sheikh Zayed bin Sultan Al Nahyan19182 December1971
Denmark Queen Margrethe II 16 April 194014 January 1972
NepalKing Birendra28 December194531 January1972
QatarEmir Khalifa bin Hamad al-Thani193222 February1972
BhutanKing Jigme Singye Wangchuk11 November195521 July1972
Sweden King Carl XVI Gustaf 30 April 194615 September 1973
Saudi ArabiaKing Khalid191325 March1975
MalaysiaParamount Ruler Sultan Yahya Petra10 December191721 September1975
Spain King Juan Carlos I 5 January 1938 22 November 1975
Central African EmpireEmperor Bokassa I22 February19214 December1976
KuwaitEmir Jaber Al-Ahmad Al-Jaber Al-Sabah29 June192631 December1977



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