Saturday, March 14, 2015

Happy Pi Day

Today is arguably the most Pi Day we will probably ever experience until 3015, 3/14/15 (unless you round up, then it would be 3/14/16). The Julian Calendar was introduced in 45 BC, so prior to that, it's tough for me to say which dates were more Pi.

Although any March 14th is Pi Day, here is a partial list of some of the "most" Pi Days in Base 10 in order of precedence, in my opinion:

Base 10 M/DD/YY, M/DD/YYY, or M/DD/YYYY format:

  • March 14th, 1592 AD (or BC) - known as Ultimate Pi Day: the largest correspondence between calendar dates and significant digits of pi since the introduction of the Julian calendar (according to Wikipedia).
  • March 14th, 159 AD (or BC) - debatable: 3/14/0159 is less Pi because of the 0
  • March 14th, 15 AD (or BC) and 16 may also be acceptable if you round up
  • March 14th, 1 AD (or BC)
  • March 14th on any year ending in 15 (or 16 if you round up), e.g. 3/14/15 (or 3/14/16)

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