It was on a Saturday.
December 12 can fall on any day of the week.
December 25, 1927 was a Sunday.
It was a Saturday.
February 21, 1927 was a Monday.
May 13 1927 was a Friday.
On a Monday.
Saturday
It was a Monday.
Thursday
January 14, 1927 fell on a Friday.
June 29, 1927 fell on a Wednesday.
November 7, 1927 fell on a Monday.