Depends on the year.
It was a Saturday.
Sunday
February 25, 1964 was a Tuesday.
June 25th 1948 was on a Friday
It was a Tuesday.
It can be any day
August 25th 1995 was a Friday.
June 25th 2009 fell on a Thursday.
July 25th, 1968 fell on a Thursday.
Friday
It was a Wednesday.
It was a Friday.