

    \filetitle{hh}{IRIS serial date number for half-yearly date}{dates/hh}

	\paragraph{Syntax}

\begin{verbatim}
Dat = hh(Y)
Dat = hh(Y,H)
\end{verbatim}

\paragraph{Input arguments}

\begin{itemize}
\item
  \texttt{Y} {[} numeric {]} - Year.
\item
  \texttt{H} {[} numeric {]} - Half-year; if missing, first half-year
  (January to June) is assumed.
\end{itemize}

\paragraph{Output arguments}

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

\paragraph{Description}

\paragraph{Example}


