December 12, 1949 fell on a Monday.
Monday.
December 12 can fall on any day of the week.
That date can be interpreted in two ways. The 11th of December 1949 was a Sunday. The 12th of November 1949 was a Saturday.
February 12th 1949 was a Saturday.
Wednesday
Tuesday
Friday
It was a Monday.
December 12 1947 was a Friday.
December 12 2010 was a Sunday.
December 12 1958 was a Friday.
December 12, 1990 was a Wednesday.