Date printing, formatting, and manipulation in TeX
Description
TeX and LaTeX provide few facilities for dates by default, though many packages
have filled this gap. This package fills it, as well, with a pure TeX-primitive
implementation. It can print dates, advance them by numbers of days, weeks, or
months, determine the weekday automatically (with an algorithm cribbed from the
dayofweek.tex file written by Martin Minow), and print them in (mostly)
arbitrary format. It can also print calendars (monthly and yearly)
automatically, and can be easily localized for non-English languages.