MONDAY, APRIL 4, 2022

1588-Christian IV succeeds Frederik II as king of Denmark

1832-Charles Darwin aboard HMS Beagle reaches Rio de Janeiro

1896-Announcement of Gold in the Yukon

1912-Chinese republic proclaimed in Tibet

1932-Vitamin C 1st isolated, C C King, University of Pittsburgh

1945-Hungary liberated from Nazi occupation (National Liberation Day)

1949-Israel & Jordan sign armistice agreement

1960-Senegal declares independence from France

1966-Pirate Radio Scotland changes name to Radio Ireland

1983-6th space shuttle mission, Challenger 1 launched

1992-Jury deliberations begin in the Noriega case

1997-STS 83 (Columbia 22), launches