April 1st 1990 was a Sunday.
April 1 1969 was a Tuesday.
It was a Friday.
Monday
April 1, 2007 fell on a Sunday.
7 days = 1 week so 1 day = 1/7 weeks.
April 1 1990 was a Sunday.
1 August 1990 was a Wednesday.
July 1 1990 was a Sunday.
1 January 1990 was a Monday.
February 1, 1990 was a Thursday.
December 1, 1990 fell on a Saturday.
September 1, 1990 fell on a Saturday.
April 1 1967 was a Saturday.
April 1 1977 was on a Friday.
April 1 1948 was a Thursday.
April 1 1969 was a Tuesday.
April 1 1959 was a Wednesday.