Create your own fantasycalendar for your DnD, SciFi or other projects. Define the number of months in a year, the number of days in each month, the number of weekdays and name them as you like it! Define your own leap-years, create and add as many moons as you like and add recurring and one-time dates as you see fit.
An up-to-date LaTeX distribution.
The files "fantasycalender.code.tex", "fantasycalenderbase.code.tex" and "fantasycalendermoon.code.tex" need to be in the same folder
as the .tex document you want to use them in. In the document itself you may use \input{fantasycalender.code} in the preamble to include it.
There is a wiki for a quick start on (https://github.com/Vidabe/FantasyCalendar/wiki)
There are many examples to look at, e.g. "DnD5e.tex", "Fantasy1.tex", "Greorgian.tex", "Klingon.tex", etc.
This material is subject to the LATEX Project Public License 1.3c