code-latex-list-dates

\newcounter{mycntr}\newcommand\mycntr{\arabic{mycntr}} %https://tex.stackexchange.com/questions/287267/how-can-i-test-the-value-of-two-counters
\setcounter{mycntr}{0}
\newenvironment{schedule}[1][\relax]
  {\par#1\longdate\renewcommand{\item}{\par%
    \stepcounter{mycntr}\ifnum\value{mycntr}>5\relax%
      \setcounter{mycntr}{1}\AdvanceDate[3]%
    \else
      \AdvanceDate[1]%
    \fi\today\newline – \hspace{1cm}}
  }{\par}