What day of the week was February 1, 1957?

The day of the week February 1st, 1957 fell on was a Friday.

Friedrich Paulus the German general (b. 1890) died on this day in 1957.

Felix Wankel's first working prototype (DKM 54) of the Wankel engine runs at the NSU research and development department Versuchsabteilung TX in Germany