A collection of methods to compute the day of the week for any date in the Gregorian calendar.
Currently includes:
- Conway's Doomsday Algorithm
- Zeller's Congruence
- Sakamoto's Method
To run the scripts you must have a J interpreter installed (the scripts look for /usr/bin/ijconsole so adjust this as necessary).
Clone this repository (or download any of scripts you want). Make sure the scripts are executable (i.e. chmod +x [script]).
Execute a script with the date passed as three integer arguments of the form YYYY MM DD. For example:
$ ./doomsday.ijs 1999 12 31
Friday
$ ./zeller.ijs 2080 2 29
Thursday