It was a Monday.
23 December 1941 was a Tuesday.
December 23, 1955 was a Friday.
December 23 1972 was a Saturday.
December 23 2010 was a Wednesday.
December 23 1995 was a Saturday.
23 December 1998 was a Wednesday.
23 December 1943 was a Thursday.
23 December 1950 was a Saturday.
December 23, 1965 fell on a Thursday.
December 23, 1960 fell on a Friday.
December 23, 1996 fell on a Monday.
December 23, 1957 was a Monday.