March 11, 1302 was a Saturday, if our date calculators for the current system work that far back. :)
July 11, 1302 would have been on a Tuesday.Reference: http:/www.searchforancestors.com/utility/dayofweek.html
William of March died on 1302-06-11.
March 11 1986 was on a Tuesday.
In 1913, March 11 was a Tuesday.
March 11 1950 was a Saturday.
March 11 2010 was a Thursday.
11 March 1970 was a Wednesday.
March 11, 1920 was a Thursday.
March 11, 1949 was a Friday.
March 11, 1930 was a Tuesday.
March 11, 1966 fell on a Friday.
The last day of week 11 in 2017 was Saturday March 18th.