Zeller's congruence

Summary

Zeller's congruence is a determination of the day of the week^[1]. It draws 124 Wikipedia views per month (determination_of_the_day_of_the_week category, ranking #1 of 1).^[2]

Key Facts

• Zeller's congruence is credited with the discovery of Christian Zeller^[3].
• Zeller's congruence's instance of is recorded as determination of the day of the week^[4].
• Zeller's congruence's instance of is recorded as formula^[5].
• Christian Zeller is named after Zeller's congruence^[6].
• Zeller's congruence's Commons category is recorded as Perpetual calendars^[7].
• Zeller's congruence's time of discovery or invention is recorded as +1882-00-00T00:00:00Z^[8].
• Zeller's congruence's Freebase ID is recorded as /m/04h9f0^[9].
• Zeller's congruence's defining formula is recorded as h = \left(q + \left\lfloor\frac{13(m+1)}{5}\right\rfloor + K + \left\lfloor\frac{K}{4}\right\rfloor + \left\lfloor\frac{J}{4}\right\rfloor - 2J\right) \bmod 7^[10].
• Zeller's congruence's defining formula is recorded as h = \left(q + \left\lfloor\frac{13(m+1)}{5}\right\rfloor + K + \left\lfloor\frac{K}{4}\right\rfloor + 5 - J\right) \bmod 7^[11].
• Zeller's congruence's Quora topic ID is recorded as Zellers-Congruence^[12].
• Zeller's congruence's Dictionary of Algorithms and Data Structures ID is recorded as zellersCongruence^[13].
• Zeller's congruence's Dictionary of Algorithms and Data Structures ID is recorded as ZellersAlgorithm^[14].
• Zeller's congruence's maintained by WikiProject is recorded as WikiProject Mathematics^[15].
• Zeller's congruence's Microsoft Academic ID is recorded as 2779455459^[16].

Body

Designation and Status

Recorded instance of include determination of the day of the week^[4] and formula^[5].

History and Context

Christian Zeller is named after Zeller's congruence^[6].

Why It Matters

Zeller's congruence draws 124 Wikipedia views per month (determination_of_the_day_of_the_week category, ranking #1 of 1).^[2] It has Wikipedia articles in 9 language editions, a strong signal of global cultural recognition.^[17] It is known by 3 alternative names across languages and contexts.^[18]