It was a Monday.
Sept 10 1983 was a Saturday.
Sept 10th 1951 was a Monday.
Sunday.
10 October 1984 was a Wednesday.
10 November 1984 was a Saturday.
January 10, 1984 was a Tuesday.
April 10, 1984 fell on a Tuesday.
September 10, 1984 fell on a Monday.
September 10th, 2002 fell on a Tuesday.
February 10th 1984 was a Friday.
It was a Wednesday.
Wednesday. You can find a day of week calculator at this site. Just enter in the date and it will calculate it for you: http://www.searchforancestors.com/utility/dayofweek.html