

    \filetitle{mm}{IRIS serial date number for monthly date}{dates/mm}

	\paragraph{Syntax}

\begin{verbatim}
Dat = mm(Y)
Dat = mm(Y,M)
\end{verbatim}

\paragraph{Input arguments}

\begin{itemize}
\item
  \texttt{Y} {[} numeric {]} - Year.
\item
  \texttt{M} {[} numeric {]} - Month; if omitted, first month (January)
  is assumed.
\end{itemize}

\paragraph{Output arguments}

\begin{itemize}
\itemsep1pt\parskip0pt\parsep0pt
\item
  \texttt{Dat} {[} numeric {]} - IRIS serial date number representing
  the monthly date.
\end{itemize}

\paragraph{Description}

\paragraph{Example}


