Iterate through dates

Question

I want to create a one day per page calendar. I create the pages in a for loop, but I don't know how to save and increase it each iteration.

I thought about saving day, month and year separated, but then I would have to save how many days each month has and which years are leap years.

Is there a way to save a date and/or increase it?

Answer 1

There's an old package, that temporarily sets the date with \AdvanceDate.

\documentclass{article}

\usepackage{pgffor}
\usepackage{advdate}


\begin{document}
\ThisDay{0} % Set the day number to zero
\ThisMonth{1} % Start in January
%\ThisYear{2017} % for example
\foreach \x in {1,...,365} {%
  \AdvanceDate[\x]
  {\hfill\huge\textbf{\today}\hfill}  % Just as an example
  \clearpage
}

\end{document}

As can be seen from the screen shot the \AdvanceDate command is aware of leap years

Answer 2

Here is an answer using pgf macros, see Section 90 "Date and Calendar Utility Macros" of the manual:

\documentclass{article}

\usepackage{pgfcalendar}

\begin{document}
\pgfcalendar{cal}{2020-08-11}{2020-08-15}{%
  \centering\huge\bfseries%
  \pgfcalendarshorthand wt,                         % weekdayname,
  \pgfcalendarshorthand mt\ \pgfcalendarcurrentday, % monthname dayofmonth,
  \pgfcalendarcurrentyear\clearpage%                % year
}
\end{document}

The same, but using a shorthand as suggested by the manual:

\documentclass{article}

\usepackage{pgfcalendar}

\begin{document}
\let\%=\pgfcalendarshorthand
\pgfcalendar{cal}{2020-08-11}{2020-08-15}{%
  \centering\huge\bfseries%
  \%wt, \%mt \%d0, \%y0\clearpage%
}
\end{document}

The first page looks like: