** Battle of Placentia — Emperor Aurelian is defeated by the Alemanni forces invading Italy

** Emperor Ai of Jin, a Jin Dynasty ( 265-420 ) emperor

** Emperor Ai of Han ( 27 BC – 1 BC )

** Emperor Ai of Tang ( 892 – 908 )

** Liber ad honorem Augusti by Peter of Eboli, narrative of the conquest of Sicily by Henry VI, Holy Roman Emperor ( Latin )

** Imperial Prince Nunakura Futotama-Shiki ( Emperor Bidatsu ); born 538 ( second son )

** Imperial Prince Oe or Ikebe ( Emperor YOMEI ); born 540 ( fourth son )

** Imperial Princess Ohotomo or Ohomata ; born about 560 ; married to her nephew Prince Oshisako no Hikohito no Oe, son of Emperor Bidatsu

** Imperial Princess Toneri, born about 565 ; died 603 ; married to her nephew Prince Tame Toyora, son of Emperor Yomei

** Imperial Princess Hasetsukabe no Anahobe no Hashihito, born about 560 ; died 621 ; married ( A ) to her half brother Emperor Yomei ; married ( B ) to her nephew and stepson Prince Tame Toyora, son of Emperor Yomei

** Imperial Prince Hatsusebe ( Emperor SUSHUN )

** Prince Oshisako no Hikohito no Oe, born about 556, married ( A ) Princess Ohomata ( Ohotomo ), his aunt, daughter of Emperor Kimmei and Soga no Kitashi-Hime, by whom he had a son and a daughter ;( B ) Princess Nukate-Hime ( his half sister ), by whom he had 3 sons ; ( C ) Princess Woharida ( his half sister ), by whom he had a son and a daughter:

** Princess Uji no Shitsukahi ( Uji no Kahitako ), born about 570, married to Prince Shōtoku, son of Emperor Yōmei and Empress Anahobe

** Princess Tame, married to her nephew Emperor Jomei

** Second son: Imperial Prince Ohito ( 緒仁親王 ) ( Emperor Go-En ' yū )

** First son: Imperial Prince Motohito ( 幹仁親王 ) ( Emperor Go-Komatsu )

** Henry II, Holy Roman Emperor

** Der Tag wird kommen ( The day will come, Josephus and the Emperor ), 1942

** Emperor Constantine I

** The Treaty of Münster ( Instrumentum Pacis Monasteriensis, IPM ), concerning the Holy Roman Emperor and France and their respective allies.

** The Treaty of Osnabrück ( Instrumentum Pacis Osnabrugensis, IPO ), concerning the Holy Roman Emperor, the Empire and Sweden and their respective allies.

** Jean-Bédel Bokassa, president of the Central African Republic, crowns himself Emperor.

** Emperor Charles I of Austria gives up his absolute power but does not abdicate.

** WWII: Emperor Hirohito announces Japan's surrender on the radio.

** Father's Day ( Bulgaria )

** Prime Ministers of Bulgaria

** Presidents of Bulgaria

** Boris I of Bulgaria ( Bulgarian Orthodox Church )

** Bulgarian Education and Culture and Slavonic Literature Day ( Bulgaria )

** Survivor BG, Bulgaria

** Georgi Parvanov, President of Bulgaria

** Bogdan Filov, 28th Prime Minister of Bulgaria ( executed ) ( b. 1883 )

** WWII: Bulgaria signs the Tripartite Pact, thus joining the Axis powers.

** The National Assembly of Bulgaria votes to end one party rule by the Bulgarian Communist Party.

** President of Bulgaria Petar Mladenov resigns over charges he order tanks to disperse antigovernment protests in December 1989.

** Prime Minister of Bulgaria Andrey Lukanov and his government of former Communists resign under pressure from strikes and street protests.

** The National Assembly of Bulgaria elects Dimitar Iliev Popov as Prime Minister of Bulgaria.

** The former prime minister of Bulgaria, Andrei Lukanov, is assassinated.

** Treaty of Craiova: Romania loses Southern Dobrudja to Bulgaria.

** King Boris III of Bulgaria ( d. 1943 )

** After 45 years of Communist rule in Bulgaria, Bulgarian Communist Party leader Todor Zhivkov is replaced by Foreign Minister Petar Mladenov, who changes the party's name to the Bulgarian Socialist Party.

** Albania, Austria, Bulgaria, Cambodia, Finland, Hungary, Ireland, Italy, Jordan, Laos, Libya, Nepal, Portugal, Romania, Spain, and Sri Lanka join the United Nations simultaneously, after several years of moratorium on admitting new members that began during the Korean War.

** Bulgaria regains its independence from the Ottoman Empire.

** Tsar Chaka, Mongol ruler of Bulgaria

** King Michael Asen IV оf Bulgaria ( d. 1355 )

** Theodore Svetoslav of Bulgaria, emperor of Bulgaria