What day of the week was December 21, 1968?

The day of the week December 21st, 1968 fell on was a Saturday.

There were 4 days until Christmas.

Vittorio Pozzo the Italian footballer, coach, and manager (b. 1886) died on this day in 1968.

Apollo program: Apollo 8 is launched from the Kennedy Space Center the placing its crew on a lunar trajectory for the first visit to another celestial body by humans.