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N+9.1: Non leap years will never contain a leap day. http://support.microsoft.com/kb/214326 http://support.microsoft.com/kb/214326

• cbr 14y ago
  But that's a bug in Excel. "Non leap years will never contain a leap day" is true.
  • antidoh 14y ago
    For now.
  • hc5 14y ago
    It was a bug in Lotus 1-2-3 that was intentionally implemented into Excel, so technically it was a backwards-compatibility "feature". And some items from the original list aren't exactly "truths" as much as implementations or configurations, e.g. > 19. The system clock will never be set to a time that is in the distant past or the far future. > 20. Time has no beginning and no end.
    • NoahSussman 14y ago
      'items from the original list aren't exactly "truths" as much as implementations or configurations' QFT.