C Library Functions - date_to_unix (3)

NAME

date_to_unix(3f) - [M_time:UNIX_EPOCH] converts DAT date-time array to Unix Epoch Time (LICENSE:PD)

Synopsis
Description
Options
Returns
Example
Author
License

SYNOPSIS

subroutine date_to_unix(dat,unixtime,ierr)

    integer,intent(in)               :: dat(8)
    real(kind=realtime),intent(out)  :: unixtime
    integer,intent(out)              :: ierr

DESCRIPTION

Converts a DAT date-time array to a UET (Unix Epoch Time).

OPTIONS

dat Integer array holding a "DAT" array, similar in structure to the array returned by the intrinsic DATE_AND_TIME(3f):
             dat=[ year,month,day,timezone,hour,&
              & minutes,seconds,milliseconds]

RETURNS

unixtime
The "Unix Epoch" time, or the number of seconds since 00:00:00 on January 1st, 1970, UTC.

ierr Error code. If 0 no error occurred.

EXAMPLE

Sample program:

     program demo_date_to_unix
     use M_time, only : date_to_unix, realtime
     implicit none
     integer             :: dat(8)
     real(kind=realtime) :: unixtime
     integer             :: ierr
        call date_and_time(values=dat)
        write(*,’(" Today is:",*(i0:,":"))’)dat
        call date_to_unix(dat,unixtime,ierr)
        write(*,*)’Unix Epoch time is ’,unixtime
        write(*,*)’ierr is ’,ierr
     end program demo_date_to_unix

results:

     Today is:2016:7:18:-240:23:44:20:434
     Unix Epoch time is    1468899860.4340105
     ierr is            0

AUTHOR

John S. Urban, 2015

LICENSE

Public Domain

Nemo Release 3.1

date_to_unix (3)

June 29, 2025

Generated by manServer 1.08 from 80dc9a2c-b4a1-4ce8-a875-e2816e68314d using man macros.

unixtime
	The "Unix Epoch" time, or the number of seconds since 00:00:00 on January 1st, 1970, UTC.
ierr	Error code. If 0 no error occurred.