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NAME
     time, ctime, ctime64, ltime,  ltime64,  gmtime,  gmtime64  -
     return system time

SYNOPSIS
     INTEGER*4 FUNCTION time()
           standard FORTRAN version in 32-bit environments

     INTEGER*8 FUNCTION time()
           standard FORTRAN version in 64-bit SPARC environments

     CHARACTER*8 t
     CALL time(t)
           VMS version

     INTEGER n
     CHARACTER*24 FUNCTION ctime(n)

     INTEGER*8 n8
     CHARACTER*24 FUNCTION ctime64(n8)

     INTEGER*4 stime, tarray(9)
     CALL ltime(stime, tarray)

     INTEGER*8 stime8
     INTEGER*4 tarray(9)
     CALL ltime64(stime8, tarray)

     INTEGER*4 stime, tarray(9)
     CALL gmtime(stime, tarray)

     INTEGER*8 stime8
     INTEGER*4 tarray(9)
     CALL gmtime64(stime8, tarray)


DESCRIPTION
     The function time has two versions. The standard version  is
     available  by default. The VMS version is available when the
     calling program is compiled with the -lV77 option.

     Standard Version:
       Function:  time() returns an  integer  that  contains  the
       time  since  00:00:00  GMT,  Jan.  1,  1970,  measured  in
       seconds.  This is the value of the operating system clock.
       Usage:
         integer*4  n, time
         n = time()

     VMS Version:
       Subroutine:  time gets the current system time as a  char-
       acter string.
       Usage:
         call time( t )
         where t is of type character*8, with the form hh:mm:ss.
         hh, mm, and ss are two digits; hh is hour; mm is minute;
         and ss is second.

       Example:
         demo% cat tim1.f
                 character  t*8
                 call time( t )
                 write( *, "(' The time is: ', A8 )" )  t
                 end
         demo% f77 -silent tim1.f  -lV77
         demo% a.out
          The time is: 08:14:13
         demo%

     ctime returns the system  time,  stime,  as  a  24-character
     string. For example, the program:
              character*24 ctime
              integer*4 time
              print*, ctime(time())
              end

     prints the following:
       Tue Sep  8 17:01:03 1998

     ltime and gmtime split system time into various  time  units
     for  the  local time zone (ltime) or as GMT (gtmtime). These
     units are returned in a nine-element INTEGER*4 array as fol-
     lows:

     tarray 1 through 9, index, units, and range:
     1 Seconds (0 - 61)
     2 Minutes (0 - 59)
     3 Hours (0 - 23)
     4 Day of month (1 - 31)
     5 Months since January (0 - 11)
     6 Year - 1900
     7 Day of week (Sunday = 0)
     8 Day of year (0 - 365)
     9 Daylight Standard Time, 1 if DST in effect

NOTES
     64-bit versions of ctime, ltime, and  gmtime  are  provided.
     These take an INTEGER*8 time value.

     After January 19, 2038, at 3:14:07 GMT, the time() value  of
     seconds  since  January  1,  1970  will  exceed the range of
     INTEGER*4. To calculate such dates with these routines,  use
     the 64-bit versions and an INTEGER*8 argument.

     When compiled to run in a 64-bit  environment,  time()  will
     return an INTEGER*8 value. Compiling for 64-bit environments
     means compiling the program with the  -xarch=v9  option  and
     running  the  program on a 64-bit SPARC platform in a 64-bit
     Solaris operating environment.

FILES
     libF77.a, libV77.a

SEE ALSO
     Fortran Library Reference Manual
     itime(3F), idate(3F), fdate(3F) ctime(3C)

     For the C version of ctime, type:  man -s 3C ctime

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