It was a Wednesday.
Saint Valentine's Day of 1985 was a Thursday.
In order to know what day of the week a day in February 1985 was one needs to know the date in February.
February 29th, 1985 was actually a leap year. So, this day of the week did not occur.
8 June 1985 was a Saturday.
11 June 1985 was a Tuesday.
April 4 1985 was on a Thursday.
7 January 1985 was a Monday.
1 March 1985 was a Friday.
7 March 1985 was a Thursday.
22 March 1985 was a Friday.
December 13 1985 was on a Friday.
April 17 1985 was a Wednesday.