A Friday the 13th Calendar

ksaj · on Oct 5, 2019

If you lived in Port Dover, you'd know it's Friday the 13th by the sound of thousands of motorcycles suddenly showing up.

http://www.pd13.com/pages/1354819210/Friday-13th-Dates

AceyMan · on Oct 4, 2019

I had a major event of success on a Friday the 13th, so since then it's always a day of great promise and luck.

I wonder how everyone's habits / rituals / mood / &c is changed due to the properties we ascribe to this date on the calendar.

AceyMan · on Oct 4, 2019

Plus the modulo(m,n) pattern is fun to think about, especially vis-a-vis an accurate sidereal calendar. What is the farthest Friday the 13th we can confidently compute?

wumms · on Oct 4, 2019

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