December 7, 1979 was a Friday.
December 12 1979 was on a Wednesday.
December 5th 1979 was a Wednesday.
Monday
Tuesday
December 12 can fall on any day of the week.
December 11 1979 was a Tuesday.
29th, December, 1979, was a Saturday.
December 6, 1979 was a Thursday.
December 8, 1979 was a Saturday.
December 8, 1979 was a Saturday.
December 31st, 1979 was a Monday.
December 3, 1979 was a Monday.