每周两次的课程表

Question

我尝试将以下代码从每周三次改为每周两次，但没有成功。另外，我想更改日期格式，使其显示：Mon Jan 28。如能得到帮助，不胜感激。

\documentclass{article}
\usepackage{advdate,datetime}% http://ctan.org/pkg/{advdate,datetime}
\newenvironment{schedule}
  {\par\longdate\renewcommand{\item}{\par%
    \stepcounter{mycntr}\ifnum\value{mycntr}>3\relax%
      \setcounter{mycntr}{0}\AdvanceDate[3]%
    \else
      \AdvanceDate[2]%
    \fi\today\quad}
  }{\par}
\newcounter{mycntr}
\begin{document}
\begin{schedule}
  \item Something
  \item Something else
  \item Relax
  \item Go to the sea
  \item Something
  \item Something else
  \item Relax
  \item Go to the sea
\end{schedule}
\end{document}