	REAL*8 FUNCTION SECS_FROM_BC( date, cal_id, status )

*
*
*  This software was developed by the Thermal Modeling and Analysis
*  Project(TMAP) of the National Oceanographic and Atmospheric
*  Administration's (NOAA) Pacific Marine Environmental Lab(PMEL),
*  hereafter referred to as NOAA/PMEL/TMAP.
*
*  Access and use of this software shall impose the following
*  obligations and understandings on the user. The user is granted the
*  right, without any fee or cost, to use, copy, modify, alter, enhance
*  and distribute this software, and any derivative works thereof, and
*  its supporting documentation for any purpose whatsoever, provided
*  that this entire notice appears in all copies of the software,
*  derivative works and supporting documentation.  Further, the user
*  agrees to credit NOAA/PMEL/TMAP in any publications that result from
*  the use of this software or in any product that includes this
*  software. The names TMAP, NOAA and/or PMEL, however, may not be used
*  in any advertising or publicity to endorse or promote any products
*  or commercial entity unless specific written permission is obtained
*  from NOAA/PMEL/TMAP. The user also understands that NOAA/PMEL/TMAP
*  is not obligated to provide the user with any support, consulting,
*  training or assistance of any kind with regard to the use, operation
*  and performance of this software nor to provide the user with any
*  updates, revisions, new versions or "bug fixes".
*
*  THIS SOFTWARE IS PROVIDED BY NOAA/PMEL/TMAP "AS IS" AND ANY EXPRESS
*  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
*  ARE DISCLAIMED. IN NO EVENT SHALL NOAA/PMEL/TMAP BE LIABLE FOR ANY SPECIAL,
*  INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
*  RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
*  CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION, ARISING OUT OF OR IN
*  CONNECTION WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE. 
*
*
* return a REAL*8 number giving the number of seconds since 1-JAN-0000:00:00

* programmer - steve hankin
* NOAA/PMEL, Seattle, WA - Tropical Modeling and Analysis Program
* written for VAX computer under VMS operating system
*
* revision 0.0 4/7/88
* revision 0.1 1/18/89 - BREAK_DATE --> TM_BREAK_DATE
* V300: 2/93 - return **something** even if error exit (caught by f77 3.2)
* V530: *acm* 12/00 add calendar types; cal_id
*       *acm* 3/12 6D Ferret (common uses nferdims in tmap_dims.parm)

        IMPLICIT NONE
* Calling argument declarations:
	INTEGER		cal_id, status
	CHARACTER*(*)	date

* Local variable declarations:
	INTEGER		year, month, day, hour, minute, second
	REAL*8		TM_SECS_FROM_BC

	include	'tmap_dims.parm'
	include 'ferret.parm'
	include 'errmsg.parm'

* Break up the date string to it's various components

	CALL TM_BREAK_DATE ( date, cal_id,
     .			  year, month, day, hour, minute, second,
     .			  status )
	IF ( status .NE. ferr_ok ) THEN
           SECS_FROM_BC = -999
           RETURN               ! err not reported
        ENDIF

* Find the offset from 01-JAN-0000 00:00:00 for this date and calendar
	SECS_FROM_BC = TM_SECS_FROM_BC (cal_id, year, month, day,
     .				     hour, minute, second, status)

	IF ( status .NE. ferr_ok ) THEN
           SECS_FROM_BC = -999
           RETURN               ! err not reported
        ENDIF

	RETURN
	END
