13th of Month Occurs on Friday More Than Any Other Day of Week

Despite the superstition that revolves around the date of Friday the 13th, it is true that the 13th day of the month occurs slightly more often on a Friday, than any other day of the week in the Gregorian Calendar.

More: http://spacewatchtower.blogspot.com/2015/11/13th-of-month-occurs-on-friday-more.html
 
gaw

Glenn A. Walsh, Project Director,
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