Doomsday rule

Summary

Doomsday rule is a calculation^[1]. It draws 392 Wikipedia views per month (calculation category, ranking #1 of 3).^[2]

Key Facts

• Doomsday rule is credited with the discovery of John Horton Conway^[3].
• Doomsday rule's instance of is recorded as calculation^[4].
• Doomsday rule's instance of is recorded as method^[5].
• Doomsday rule's instance of is recorded as mental calculation^[6].
• Doomsday rule's Freebase ID is recorded as /m/02y3yx^[7].
• Doomsday rule's Commons gallery is recorded as Doomsday rule^[8].
• Doomsday rule's defining formula is recorded as \begin{matrix}\left({\left\lfloor{\frac{y}{12}}\right\rfloor+y \bmod 12+\left\lfloor{\frac{y \bmod 12}{4}}\right\rfloor}\right) \bmod 7+\rm{anchor}=\rm{Doomsday}\end{matrix}^[9].
• Doomsday rule's Quora topic ID is recorded as Doomsday-Algorithm^[10].
• Doomsday rule's Dictionary of Algorithms and Data Structures ID is recorded as doomsday^[11].
• Doomsday rule's Dictionary of Algorithms and Data Structures ID is recorded as doomsdayAlgorithm^[12].
• Doomsday rule's maintained by WikiProject is recorded as WikiProject Mathematics^[13].

Body

Works and Contributions

Doomsday rule is credited with the discovery of John Horton Conway^[3].

Why It Matters

Doomsday rule draws 392 Wikipedia views per month (calculation category, ranking #1 of 3).^[2] It has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.^[14] It is known by 6 alternative names across languages and contexts.^[15]