Friday.
Saturday
It was a Thursday.
April 12 1951 was on a Thursday.
April 12, 1987 was a Sunday.
April 12 1938 was a Tuesday.
April 12, 1984, was a Thursday.
September 12, 1957 fell on a Thursday.
April 12 1948 was a Monday.
That day was a Saturday.
April 12, 1919 fell on a Saturday.
April 12, 1941 fell on a Saturday.
The given date was a Saturday.