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.
May, 31st, 1985, was a Friday.
February 15, 1985 was a Friday.
15th January 1985, was a Tuesday.
August 13 1985 was on a Tuesday.
August 25th, 1985 was a Sunday.
August 16 1985 was a Friday.
August 23, 1985 was a Friday.
August 21, 1985 was a Wednesday.
August 6th, 1985 fell on a Tuesday.
August 28, 1985 fell on a Wednesday.
August 26, 1985 fell on a Monday.
August 6th, 1985 fell on a Tuesday.
August 7, 1985 fell on a Wednesday.
August 3, 1985 fell on a Saturday.
3rd August 1953 was a Monday.