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4 Aban 1473

Monday 4 Aban 1473 in the Persian calendar is Monday, 25 October 2094, and 15 Jumada al-Thani 1518 in the Islamic calendar.

This day's Islamic date is not yet officially announced and is an astronomical estimate; it and the day's religious occasions may move by a day.

This day in four calendars

1868 (158 years ago) The Uspenski Cathedral, designed by Aleksey Gornostayev, is inaugurated in Helsinki, Finland.
1875 (151 years ago) Pyotr Ilyich Tchaikovsky's Piano Concerto No. 1 in B♭ minor, Op. 23 premieres in Boston, Massachusetts, with Benjamin Johnson Lang as conductor and Hans von Bülow as soloist.
1911 (115 years ago) The Xinhai Revolution spreads to Guangzhou, where the Qing general Fengshan is assassinated by the Chinese Assassination Corps.
1944 (82 years ago) World War II: Heinrich Himmler orders a crackdown on the Edelweiss Pirates, a loosely organized youth culture in Nazi Germany that had assisted army deserters and others to hide from the Third Reich.
1971 (55 years ago) The People's Republic of China replaces the Republic of China at the United Nations.
1990 (36 years ago) The Kazakh Soviet Socialist Republic declares its sovereignty from the Soviet Union.
2001 (25 years ago) Microsoft releases Windows XP, which becomes one of Microsoft's most successful operating systems.
2010 (16 years ago) A magnitude 7.8 earthquake strikes off Indonesia's Mentawai Islands, triggering a tsunami that kills at least 400 people.

1800 (226 years ago) Thomas Babington Macaulay, English poet, historian, and politician, Secretary at War (died 1859)
1806 (220 years ago) Max Stirner, German philosopher and author (died 1856)
1811 (215 years ago) Évariste Galois, French mathematician and theorist (died 1832)
1825 (201 years ago) Johann Strauss II, Austrian composer and educator (died 1899)
1838 (188 years ago) Georges Bizet, French pianist and composer (died 1875)
1881 (145 years ago) Pablo Picasso, Spanish painter and sculptor (died 1973)
1971 (55 years ago) Elif Şafak, French-Turkish journalist, author, and academic
1984 (42 years ago) Katy Perry, American singer-songwriter and actress

625 (1401 years ago) Pope Boniface V,
1154 (872 years ago) Stephen, King of England
1400 (626 years ago) Geoffrey Chaucer, English philosopher, poet, and author (born c. 1343)
1647 (379 years ago) Evangelista Torricelli, Italian physicist and mathematician (born 1608)
1760 (266 years ago) George II of Great Britain,
1973 (53 years ago) Abebe Bikila, Ethiopian runner (born 1932)
1993 (33 years ago) Vincent Price, American actor (born 1911)
2002 (24 years ago) Richard Harris, Irish actor and singer (born 1930)