Calendar/
caldat.pro
Return the calendar date and time given julian date.
This is the inverse of the function julday.
3 calendars are available according to the value of key_caltype
(variable of the common file cm_4cal): 'greg', '360d', 'noleap'
caldat
Calendar
caldat, julian, month, day, year, hour, minute, second, NDAYSPM=integer
Parameters
julian
in
required
type: long integer or double-precision floating-point
contains the Julian Day Number (which begins at noon) of the
specified calendar date.
month
out
type: longword integer
Number of the desired month (1 = January, ..., 12 = December).
day
out
type: longword integer
Number of day of the month.
year
out
type: longword integer
Number of the desired year.
hour
out
type: longword integer
Hour of the day
minute
out
type: longword integer
Minute of the day
second
out
type: double-precision floating-point
Second (and fractions) of the day.
Keywords
NDAYSPM
type: integer
default: 30
To use a calendar with fixed number of days per month.
see also the use of key_caltype (variable of the common file cm_4cal)
Version history
Version
$Id: caldat.pro 318 2007-12-03 14:21:21Z smasson $
History
Translated from "Numerical Recipes in C", by William H. Press,
Brian P. Flannery, Saul A. Teukolsky, and William T. Vetterling.
Cambridge University Press, 1988 (second printing).
DMS, July 1992.
DMS, April 1996, Added HOUR, MINUTE and SECOND keyword
AB, 7 December 1997, Generalized to handle array input.
Eric Guilyardi, June 1999
Added key_work ndayspm for fixed number of days per months
AB, 3 January 2000, Make seconds output as DOUBLE in array output.
Sebastien Masson, May 2006, add different calendar with key_caltype
(variable of the common file cm_4cal)
Known issues
Restrictions
Accuracy using IEEE double precision numbers is approximately 1/10000th of a
second.
Other attributes
Uses routines
cm_4cal
Produced by IDLdoc 2.0.
