February 31

February 31 or 31 February does not exist in both Julian calendar and Gregorian calendar. It is used on gravestones when the date is never really known.[1]

It is also used (with February 32 and February 33) for weather data.[2]

Deaths

1831 - Rachael Mack[1]

References
  1. "February 31 on Gravestone | Swampy Acres Farm Blog". Archived from the original on 2018-12-19. Retrieved 2019-02-23.
  2. J. D. Everett (1863). "Description of a method of Reducing Observations of Temperature". The American Journal of Science and Arts. S. Converse: 23.
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