How to make and use a John Conway Doomsday Device
Channel: bornach
Date: 2020-09-12

I made a paper and cardboard device for calculating John Conway's Doomsday rule. You can use it to work out on which day of the week any calendar date falls.

I show you how you can make your own Doomsday Device, and demonstrate its use in calculating the day of the week for a few example dates.


Instructables:
https://www.instructables.com/id/John-Conway-Doomsday-Device/


John Conway demonstrates and explains his Doomsday Rule

https://www.youtube.com/watch?v=T_nQG-Bzxsg
https://www.youtube.com/watch?v=hELMxWQQmw8
https://www.youtube.com/watch?v=mN6oA3NIiWg



Doomsday Rule
https://en.wikipedia.org/wiki/Doomsday_rule