September 12, 1960 fell on a Monday.
Sunday. 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
Monday
It was the day/month/year I was born and it was a Sunday.
It was a Tuesday.
12 September 1787 was a Wednesday.
12 September 1947 was a Friday.
12 September 1998 was a Saturday.
September 12 1953 was on a Saturday.
September 12 1988 was a Monday.
September 12 2010 was a Sunday.
September 12, 2012 was a Wednesday.
September 12, 1954 was a Sunday.