March 0

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March 0 is an imaginary date, used (most often in astronomy and software engineering) to refer to the last day of February, as a way of allowing for the fact that the number of days in February varies in leap years.[1][2] It can also be used as a term for half-birthdays of people born on August 29, 30 and 31.

See also


  1. Astronomical Almanac for the year 2003, Washington and London: U.S Government Printing Office and The Stationery Office, 2001, p. K2<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  2. Simon Ramo, Ronald Sugar, Strategic Business Forecasting: A Structured Approach to Shaping the Future<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>