Mentally calculating the day of the week

1 · John Cook · May 7, 2022, 2:04 p.m.
In my previous post I mentioned John Conway’s Doomsday rule for calculating the day of the week for any date. This method starts off very simple, but gets more complicated when you actually use it. This post will present an alternative method that’s easier to use in practice and can be described more succinctly. Here’s […] The post Mentally calculating the day of the week first appeared on John D. Cook....