\Header{date.mdy}{Convert from Julian Dates to Month, Day, and Year}
\keyword{chron}{date.mdy}
\begin{Description}\relax
Convert a vector of Julian dates to a list of vectors with the
corresponding values of month, day and year, and optionally weekday.
\end{Description}
\begin{Usage}
\begin{verbatim}
date.mdy(sdate, weekday = FALSE)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{sdate}] a Julian date value, as returned by \code{mdy.date()},
number of days since 1/1/1960.
\item[\code{weekday}] if \code{TRUE}, then the returned list also will
contain the day of the week (Sunday=1, Saturday=7).
\end{ldescription}
\end{Arguments}
\begin{Value}
A list with components \code{month}, \code{day}, and \code{year}.
\end{Value}
\begin{References}\relax
Press, W. H., Teukolsky, S. A., Vetterling, W. T., and Flannery,
B. P. (1992).
\emph{Numerical Recipes: The Art of Scientific Computing (Second
Edition)}.
Cambridge University Press.
\end{References}
\begin{Examples}
\begin{ExampleCode}
day <- 7
temp <- date.mdy(mdy.date(month = 7, day = day, year = 1960))
## Check for illegal dates, such as 29 Feb in a non leap year
if (temp$day != day) {
  cat("Some illegal dates\n")
} else {
  cat("All days are legal\n")
}
\end{ExampleCode}
\end{Examples}

