May 12 (12.05) is the 132nd day of the year in the Gregorian calendar (133rd in leap years). There are 233 days remaining until the end of the year.
907 - Zhu Wen forces the Chinese Emperor Ai to abdicate, ending a three-century reign of the Tang Dynasty.
1364 - King Casimir III of Poland issues a royal charter establishing the Jagiellonian University, the oldest in the country.
1804 - Požarevac is liberated in the First Serbian Uprising.
1881 - Under threat of invasion, Tunisian fugitive Muhammad III signs an agreement in Bard, making Tunisia a French protectorate.
1888 - Britain establishes a protectorate over North Borneo and Brunei.
1925 - The first Soviet constitution is adopted by the Supreme Soviet of the Soviet Union.
1926 - Marshal Jozef Pilsudski staged a coup and established a military dictatorship in Poland.
1926 - Norway's Zeppelin crew, led by Roald Amundsen, become the first people to fly to the North Pole.
1937 - George VI is crowned King of Westminster Abbey in London. The ceremony was broadcast on BBC television, which was the first broadcast.
1943 - A battle in North Africa ends with the surrender of German General Hans von Arnim in Tunisia in World War II.
1949 - A ten-month Soviet blockade of Berlin is officially ended, during which the city is supplied from the Federal Republic of Germany by an air bridge.
1965 - West Germany establishes diplomatic relations with Israel, and Arab countries sever ties with the government in Bonn.
1985 - In the unfinished Church of St. Sava, Serbian Patriarch German held a solemn liturgy that marked the continuation of the construction of the church.
1988 - The World Health Organization announces that there are more than 34,000 AIDS patients worldwide.
The Assembly of the Serbian People in Bosnia and Herzegovina, at its session in Banja Luka, made a decision on the formation of the Army of the Republika Srpska and the establishment of the news agency SRNA.
Unable to prevent the spread of the conflict in BiH, European Union observers left Sarajevo.
1994 - Palestinian police arrive in the West Bank in preparation for taking over the city of Jericho, the seat of Palestinian autonomy in Israel.
1995 - Owners of the Rockefeller Center in New York, backed by Japanese capital, declare bankruptcy.
1997 - Russian President Boris Yeltsin and Chechen leader Aslan Maskhadov sign