date_and_time(3I)

NAME
     DATE_AND_TIME - Returns data on the real-time clock and date

SYNOPSIS
     CALL DATE_AND_TIME ([[DATE=]date] [,[TIME=]time] [,[ZONE=]zone]
     [,[VALUES=]values])

IMPLEMENTATION
     UNICOS, UNICOS/mk, and IRIX systems

STANDARDS
     Fortran 90

DESCRIPTION
     The DATE_AND_TIME intrinsic subroutine returns data on the real-time
     clock and date.  The time returned is local but the difference between
     local time and Coordinated Universal Time (UTC) can be determined.
     Note that UTC is also known as Greenwich Mean Time.

     The DATE_AND_TIME intrinsic subroutine accepts the following
     arguments:

     date      Must be a scalar of type character.  It must be at least 8
               characters long to contain the complete value.  It is an
               output argument, and the leftmost 8 characters are set to a
               value of the form CCYYMMDD, where CC is the century, YY is
               the year within the century, MM is the month within the
               year, and DD is the day within the month.  If there is no
               date available, date is set to blanks.

     time      Must be a scalar of type character.  It must be at least 10
               characters long to contain the complete value.  It is an
               output argument, and the leftmost 10 characters are set to a
               value of the form hhmmss.sss, where hh is the hour of the
               day, mm is the minutes of the hour, and ss.sss is seconds
               and milliseconds of the minute.  If there is no clock
               available, time is set to blanks.

     zone      Must be a scalar of type character.  It must be at least 5
               characters long to contain the complete value.  It is an
               output argument whose leftmost 5 characters are set to a
               value of the form _hhmm, where hh and mm are the time
               difference with respect to UTC in hours and parts of an hour
               expressed in minutes, respectively.  If there is no clock
               available, zone is set to blanks.

     values    Must be of type default integer and of rank one.  It is an
               output argument and must have at least 8 elements.  The
               values returned in values are as follows:

               Values    Return Value

               values(1) The year (that is, 1990), or -HUGE (0) if there is
                         no date available

               values(2) The month of the year (1-12), or -HUGE (0) if
                         there is no date available

               values(3) The day of the month (1-31), or -HUGE (0) if there
                         is no date available

               values(4) The time difference, in minutes, with respect to
                         UTC, or -HUGE (0) if this information is not
                         available

               values(5) The hour of the day, in the range of 0 to 23, or
                         -HUGE (0) if there is no clock

               values(6) The minutes of the hour, in the range 0 to 59, or
                         -HUGE (0) if there is no clock

               values(7) The seconds of the minute, in the range 0 to 60,
                         or -HUGE (0) if there is no clock

               values(8) The milliseconds of the second, in the range 0 to
                         999, or -HUGE (0) if there is no clock.

     DATE_AND_TIME is an intrinsic subroutine.  The name of this intrinsic
     cannot be passed as an argument.

EXAMPLES
     The following program uses the DATE_AND_TIME intrinsic subroutine:

          INTEGER date_time(8)
          CHARACTER(LEN=10) big_ben(3)
          CALL DATE_AND_TIME(big_ben(1), big_ben(2), big_ben(3), date_time)
          PRINT *,'date_time array values:'
          PRINT *,'year=',date_time(1)
          PRINT *,'month_of_year=',date_time(2)
          PRINT *,'day_of_month=',date_time(3)
          PRINT *,'time difference in minutes=',date_time(4)
          PRINT *,'hour of day=',date_time(5)
          PRINT *,'minutes of hour=',date_time(6)
          PRINT *,'seconds of minute=',date_time(7)
          PRINT *,'milliseconds of second=',date_time(8)
          PRINT *, 'DATE=',big_ben(1)
          PRINT *, 'TIME=',big_ben(2)
          PRINT *, 'ZONE=',big_ben(3)
          END

     When this program was run in Minnesota, USA, on June 1, 1994, at
     approximately 5:39 PM, on a UNICOS system, it generated the following
     output:

          date_time array values:
          year=1994
          month_of_year=6
          day_of_month=1
          time difference in minutes=360
          hour of day=17
          minutes of hour=39
          seconds of minute=30
          milliseconds of second=818
          DATE=19940601
          TIME=173930.818
          ZONE=-0600

     When this program was run in Minnesota, USA, on May 2, 1997, at
     approximately 9:34 AM, on an IRIX system, it generated the following
     output:

          date_time array values:
          year=1997
          month_of_year=5
          day_of_month=2
          time difference in minutes=300
          hour of day=9
          minutes of hour=34
          seconds of minute=39
          milliseconds of second=583
          DATE=19970502
          TIME=093439.583
          ZONE=-0500

SEE ALSO
     Intrinsic Procedures Reference Manual, publication SR-2138, for the
     printed version of this man page.