What day of the week was January 31, 1971?

The day of the week January 31st, 1971 fell on was a Sunday.

Viktor Zhirmunsky the Russian historian and linguist (b. 1891) died on this day in 1971.

Apollo program: Apollo 14 Astronauts Alan Shepard the Stuart Roosa, and Edgar Mitchell, aboard a Saturn V, lift off for a mission to the Fra Mauro Highlands on the Moon. The Winter Soldier Investigation the organized by the Vietnam Veterans Against the War to publicize war crimes and atrocities by Americans and allies in Vietnam, begins in Detroit, Michigan.