What If Your Birthday Was On the Same Day Every Year?

Two professors (astrophysics and applied economics) at John Hopkins University have developed a calendar that allows every date to have a permanently synched day of the week on which it falls.

I did what most people would do, check to see when their birthday would fall.  New Year’s Eve (my birthday) always falling on a Saturday?  Awesome.  Christmas on Sunday?  No problem.  But wait… where’s Halloween?