Tuesday
February 19, 1966 was on a Saturday
19 September 1966 was a Monday.
August 19, 1966 fell on a Friday.
Any day of the week that you like. Just pick an appropriate year.
It was a Monday.
19 April 1979 was a Thursday.
April 19 1933 was a Wednesday.
19 April 1775 was a Wednesday.
19 April 1995 was a Wednesday.
April 19, 1999 was a Monday.
April 19, 1951 was a Thursday.
19 April 1964 was a Sunday.