1885: Max Karl Ernst Ludwig Planck was appointed extraordinary professor of theoretical physics in Kiel.

1925: The Douglas C-1 biplane makes its first flight at Santa Monica, California and during the month completes trials at McCook Field.

1952: The world’s first regularly scheduled, fare-paying, jet passenger service opens with the British Overseas Airways Corporation (BOAC) Comet 1 flight from London to Johannesburg.

1958: Roger Carpentier beats Watkin’s two-week-old world altitude record when he flies to 79,452 feet in a Sud-Ouest SO 9050 in Istres, France.

1961: Manned Mercury-Redstone (MR-3) launch postponed because of rain squalls in the recovery area.

1966: British European Airways (BEA) opens the first jet service between London Heathrow and Glasgow, using de Havilland Comet 4Bs.

1970: An Overseas National Airways DC-9-30, wet leased to ALM, ditches en-route from JFK to SXM after three missed approaches to Princess Juliana International Airport. Forty passengers survived, 23 perished.