datetime
Is there a package that allows one to work with dates in the following way: just as \date shows today's date, I would like to have a command that dates the document 7 days from today.
Also, since I would like to use this as a template, I do not want to manually enter the dates myself. Is this possible?
I've seen so many crazy things made with LaTeX, i wouldn't say that something is impossible, but you have to use LuaLaTeX for my solution.
At first make a file,call it datetime.lua and add the following line.
datetime.lua
t = {}
All dates are saved in a lua table. You can edit them later in this file.
main.tex
\documentclass{scrartcl}
\usepackage{luacode}
\begin{luacode}
require("datetime")
function getdate(c)
d = os.date("%d %B, %Y")
if (c <= #t) then
tex.print(t[c])
else
file = io.open("datetime.lua", "a")
file:write("t[".. c .."] = '" .. d .. "'; ")
file:flush()
file:close()
tex.print(d)
end
end
\end{luacode}
\newcounter{date}
\addtocounter{date}{1}
\newcommand{\customdate}{\directlua{getdate(\number\value{date})}\stepcounter{date}}
\begin{document}
\customdate
\end{document}
I am using a counter to make a referenz to the date position. The value is passed to a simple lua function. If the date is already saved, it is loaded from the table and if not, it is written to the datetime file and the current date is printed.
Edit: You can get a problem when you change the order. (reorder the numbers in datetime.lua)
Simply use \today:
\documentclass[12pt,notitlepage]{article}%
%\usepackage{datetime} did not help
\newcommand*{\myTitle}{\begingroup
\centering
\vspace*{\baselineskip}
{\LARGE My Title}% Title
\vspace*{1\baselineskip}
\scshape % Small caps
My prject
\vspace*{1\baselineskip}
University of Main Street\\[\baselineskip]
\vspace*{5\baselineskip}
Written by \\[\baselineskip]
{\Large John Due\par}
\vspace*{1\baselineskip}
\today
\endgroup\clearpage}
\begin{document}
\pagestyle{empty}
\myTitle
This is my report
\end{document}
Best Answer
See the datenumber and advdate packages (and the datetime package for formatting options).
Edit: Added small example, essentially stolen from the datenumber documentation.