Library: General, Date and time functions (OMDATE) Include: omdate.xin

Return type: Integer Returns:  Returns the Julian day of the specified date, with 1 January being day number 1 (one).

Declaration

  define integer function ymdhms-julian-day-count value stream ymd

This function takes a date in "YYYYMMDD" format and returns the "Julian day" -- the number of the day within the year, with 1 January being day number 1 (one). The argument for this function can be longer, but the part beyond the date is ignored.

Argument:

• "ymd" -- a date in "YYYYMMDD" format.

  include "omdate.xin"
  process
     output "Julian day number of today = "
        || "d" % (ymdhms-julian-day-count now-as-ymdhms)
        || "%n"
  ; Result of this code, run on Feb. 19, 2001:
  ;    Julian day number of today = 50

Other Library Functions    add-to-ymdhms    arpadate-to-ymdhms    format-ymdhms    now-as-ymdhms    round-down-ymdhms    round-up-ymdhms    ymdhms-adjust-time-zone    ymdhms-day-difference    ymdhms-julian-day-count    ymdhms-month-difference    ymdhms-second-difference    ymdhms-to-arpadate    ymd-weekday

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