Thursday.
In order to know what day of the week a day in February 1985 was one needs to know the date in February.
April 21 1978 was a Wednesday.
14th, October, 1978, was a Saturday.
November 18 1978 was a Saturday.
February 18th 1967 was a Saturday.
February 18th, 1993 fell on a Thursday.
Sunday
Friday
It was a Wednesday.
March 18, 1978 was a Saturday.
18th July 1978 was a Tuesday
February 27 1978 was on a Monday.
17 February 1978 was a Friday.
February 15, 1978 is on a Wednesday
February 5th 1978 was a Sunday.
February 12 1978 was a Sunday.