• Kazumara@discuss.tchncs.de
    4·
    11 hours ago

    Leap years are each fourth year, except each hundredth year, except each thousandth year.

    1896 leap year
    1900 not leap year
    1904 leap year
    …
    1996 leap year
    2000 leap year
    2004 leap year
    …
    2096 leap year
    2100 not leap year
    2104 leap year

    Then you just arrange the 10 year window in different positions to overlap 1 to 3 leap years to reveal the three outcomes of the bug.

    - / - - - / - - - /
    - - / - - - / - - -
    - - 0 - - - / - - -

    - is a normal year, / is a leap year, 0 is an exceptional non-leap year.

    • sexybenfranklin@ttrpg.networkEnglish
      1·
      2 hours ago

      Small correction, it’s every fourth year except every hundreth year except every 400th year. I’m assuming the misconception comes from the last time it was a 100th also being a 1000th (2000) but the next time a leap year will end in 00 is 2400