Date Validate and Format
SimoDATE - The COBOL Source Code
  Table of Contents  v-14.03.28 - simodate.htm 
  Introduction
  SimoDATE, What It Does
  SimoDATE, How To Use
  The COBOL Source Code
  The COBOL Copy File
  Summary
  Software Agreement and Disclaimer
  Downloads and Links
  Current Server or Internet Access
  Internet Access Required
  Glossary of Terms
  Comments or Feedback
  Company Overview
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Table of Contents Previous Section Next Section Introduction

This document provides a listing of the COBOL source code for the callable routine SIMODATE. Additional information about this program may be obtained by sending an e-mail to: helpdesk@simotime.com


We have made a significant effort to ensure the documents and software technologies are correct and accurate. We reserve the right to make changes without notice at any time. The function delivered in this version is based upon the enhancement requests from a specific group of users. The intent is to provide changes as the need arises and in a timeframe that is dependent upon the availability of resources.

Copyright © 1987-2015
SimoTime Technologies
All Rights Reserved

Table of Contents Previous Section Next Section SimoDATE, What It Does

The SimoDATE routine (or callable program) will validate, edit and convert a given date in the ccyymmdd format into various other formats. For example, if the date of 20000401 (or April 1, 2000) is pased to the SimoDATE routine the following will be returned in the pass area.

Gregorian Date .............. 20000401
Edited Gregorian Date ....... 2000-04-01
Text for the Date............ April 1, 2000
Julian Date ................. 2000092
Days remaining in the year .. 274
Leap Year Flag (Y or N) ..... Y
Days in the Month ........... 30
Text for the Month .......... April

Table of Contents Previous Section Next Section SimoDATE, How To Use

The following will validate, edit and convert the date of April 4, 2000.

           MOVE X'EDITDATE'    to STD-REQUEST
           MOVE '20000401'     to STD-GREGORIAN-4-EDIT
           CALL 'SIMODATE'  using STD-SIMODATE

A copy file is provided to define the pass area to be used when calling SimoDATE. The following statement is required in the WORKING STORAGE section of the calling program.

       WORKING STORAGE.
       . . .
       . . .
       COPY PASSDATE.
       . . .

Note: The copy file is defined in a later section of this document.

Table of Contents Previous Section Next Section The COBOL Source Code

The following (SIMODATE.cbl) is the COBOL Source Code for the SIMODATE callable routine.

       IDENTIFICATION DIVISION.
       PROGRAM-ID.    SIMODATE.
       AUTHOR.        SIMOTIME TECHNOLOGIES.
      *****************************************************************
      * Copyright (C) 1987-2015 SimoTime Technologies.                *
      *                                                               *
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      * copyright law and international treaty.  Use of a copyright   *
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      * copies of the software. The SimoTime name or Logo may not be  *
      * used in any advertising or publicity pertaining to the use    *
      * of the software without the written permission of SimoTime    *
      * Technologies.                                                 *
      *                                                               *
      * Permission to use, copy, modify and distribute this software  *
      * for any commercial purpose requires a fee to be paid to       *
      * SimoTime Technologies. Once the fee is received by SimoTime   *
      * the latest version of the software will be delivered and a    *
      * license will be granted for use within an enterprise,         *
      * provided the SimoTime copyright notice appear on all copies   *
      * of the software. The SimoTime name or Logo may not be used    *
      * in any advertising or publicity pertaining to the use of the  *
      * software without the written permission of SimoTime           *
      * Technologies.                                                 *
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      *                                                               *
      * SimoTime Technologies                                         *
      * 15 Carnoustie Drive                                           *
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      * 415.883.6565                                                  *
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      * RESTRICTED RIGHTS LEGEND                                      *
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      * CFR 52.227-19, as applicable.  Contact SimoTime Technologies, *
      * 15 Carnoustie Drive, Novato, CA 94949-5849.                   *
      *                                                               *
      *****************************************************************
      *      This program is provided by SimoTime Technologies        *
      *        Our e-mail address is: helpdesk@simotime.com           *
      *     Also, visit our Web Site at http://www.simotime.com       *
      *                                                               *
      *****************************************************************
      *
      *****************************************************************
      * Source Member: SIMODATE.CBL
      * Copy Files:    PASSDATE.CPY
      *****************************************************************
      *
      * SIMODATE - edits and formats a gregorian date ccyymmdd. It also
      * provides additional information such as:
      *
      * 1. Identify leap year
      * 2. Provide a Julian Date
      * 3. Provide a text date - for example, January 1, 2001
      * 4. Provide days-in-month
      * and more...
      *
      * CALLING PROTOCOL
      * ----------------
      *    call 'SIMODATE' using STD-SIMODATE
      *
      *    01  STD-SIMODATE.
      *        05  STD-REQUEST             pic X(8).
      *        05  STD-RESPONSE            pic 9(4).
      *        05  STD-MESSAGE-TEXT        pic X(68).
      *        05  STD-GREGORIAN-4-EDIT    pic X(10).
      *        05  STD-EDITED-INFO.
      *            10  STD-DEBUG-INFO      pic X(8).
      *            10  STD-LEAP-YEAR-YN    pic X.
      *            10  STD-MONTH-VERBAGE   pic X(10).
      *            10  STD-MM-DAYS         pic 99.
      *            10  STD-GREGORIAN-DATE  pic 9(8).
      *            10  STD-JULIAN-DATE     pic 9(7).
      *            10  STD-JULIAN-VALUE    redefines STD-JULIAN-DATE.
      *                15  STD-JULIAN-CCYY pic 9(4).
      *                15  STD-JULIAN-DAY  pic 9(3).
      *            10  STD-DAYS-REMAINING  pic 9(3).
      *            10  STD-DATE-VERBAGE    pic X(18).
      *            10  STD-DATE-EDIT-BYTE  pic X.
      *            10  STD-DATE-EDITED     pic X(10).
      *
      *****************************************************************
      *
      * MAINTENANCE
      * -----------
      * 1997/02/27 Simmons, Created program.
      * 2004/01/26 Simmons, Mike added the check for 4000th year
      *                     increments are not leap years.
      *
      *****************************************************************
      *
       DATA DIVISION.
       WORKING-STORAGE SECTION.
      *
      *****************************************************************
      *    Data-structure for Title and Copyright...
      *****************************************************************
       01  SIM-TITLE.
           05  T1 pic X(11) value '* SIMODATE '.
           05  T2 pic X(34) value 'Process a Date Request            '.
           05  T3 pic X(10) value ' v13.06.19'.
           05  T4 pic X(24) value ' http://www.simotime.com'.
       01  SIM-COPYRIGHT.
           05  C1 pic X(11) value '* SIMODATE '.
           05  C2 pic X(20) value 'Copyright 1987-2015 '.
           05  C3 pic X(28) value '   SimoTime Technologies    '.
           05  C4 pic X(20) value ' All Rights Reserved'.

      *****************************************************************
       01  FIRST-TIME              pic X       value 'Y'.

       01  IX-1                    pic 999     value 0.
       01  IX-2                    pic 999     value 0.
       01  WORK-N-7                pic 9(7)    value 0.

       01  DATE-WORK-ALPHA.
           05  DATE-WORK-A-CCYY    pic X(4)    value SPACES.
           05  DATE-WORK-A-MM      pic X(2)    value SPACES.
           05  DATE-WORK-A-DD      pic X(2)    value SPACES.

       01  DATE-WORK-NUMERIC.
           05  DATE-WORK-N-CCYY    pic 9(4)    value 0.
           05  DATE-WORK-N-MM      pic 9(2)    value 0.
           05  DATE-WORK-N-DD      pic 9(2)    value 0.

       01  MONTH-TABLE-DATA.
           05  filler              pic X(10)   value 'January   '.
           05  filler              pic X(10)   value 'February  '.
           05  filler              pic X(10)   value 'March     '.
           05  filler              pic X(10)   value 'April     '.
           05  filler              pic X(10)   value 'May       '.
           05  filler              pic X(10)   value 'June      '.
           05  filler              pic X(10)   value 'July      '.
           05  filler              pic X(10)   value 'August    '.
           05  filler              pic X(10)   value 'September '.
           05  filler              pic X(10)   value 'October   '.
           05  filler              pic X(10)   value 'November  '.
           05  filler              pic X(10)   value 'December  '.
           05  filler              pic 99      value 31.
           05  filler              pic 99      value 28.
           05  filler              pic 99      value 31.
           05  filler              pic 99      value 30.
           05  filler              pic 99      value 31.
           05  filler              pic 99      value 30.
           05  filler              pic 99      value 31.
           05  filler              pic 99      value 31.
           05  filler              pic 99      value 30.
           05  filler              pic 99      value 31.
           05  filler              pic 99      value 30.
           05  filler              pic 99      value 31.
       01  MONTH-TABLE             redefines MONTH-TABLE-DATA.
           05  MONTH-VERBAGE       pic X(10)   occurs 12 times.
           05  MONTH-COUNT-OF-DAYS pic 99      occurs 12 times.

       01  JULIAN-DATE.
           05  JULIAN-CCYY         pic 9(4)    value 0.
           05  JULIAN-DDD          pic 9(3)    value 0.

       01  DATE-VERBAGE            pic X(18)   value SPACES.

       01  DAY-OF-WEEK-DATA.
           05  filler              pic X(10)   value 'Sunday    '.
           05  filler              pic X(10)   value 'Monday    '.
           05  filler              pic X(10)   value 'Tuesday   '.
           05  filler              pic X(10)   value 'Wednesday '.
           05  filler              pic X(10)   value 'Thursday  '.
           05  filler              pic X(10)   value 'Friday    '.
           05  filler              pic X(10)   value 'Saturday  '.
       01  DOW-TABLE               redefines DAY-OF-WEEK-DATA.
           05  DOW-VERBAGE         pic X(10)   occurs 7 times.
       01  DOW-IDX                 pic 9       value 0.

      *****************************************************************
       01  MESSAGE-BUFFER.
           05  MESSAGE-HEADER      pic X(11)   value '* SIMODATE '.
           05  MESSAGE-TEXT        pic X(68).

       01  DIFF-OF-YEARS           pic 9(4)    value 0.
       01  DIFF-OF-DAYS            pic 9(7)    value 0.
       01  DIFF-OF-WEEKS           pic 9(7)    value 0.
       01  MULTIPLE-YEARS          pic 9(7)    value 0.
       01  NUMBER-OF-LEAP-YEARS    pic 9(7)    value 0.
       01  HOLD-REMAINDER-1        pic 9(7)    value 0.
       01  HOLD-REMAINDER-2        pic 9(7)    value 0.
       01  REGISTER-7-0            pic 9(7)    value 0.

       COPY PASSDIFF.

      *****************************************************************
       LINKAGE SECTION.
       COPY PASSDATE.

      *****************************************************************
      * Mainline processing routine...
      *****************************************************************
       PROCEDURE DIVISION using STD-SIMODATE.

           add 20 to ZERO giving STD-RESPONSE
           move SPACES to STD-MESSAGE-TEXT

           if  FIRST-TIME not = 'N'
               if  STD-DEBUG-INFO = 'DEBUG   '
               or  STD-DEBUG-INFO = 'TRACE   '
                   perform Z-POST-COPYRIGHT
               end-if
               move 'N' to FIRST-TIME
           end-if

           evaluate STD-REQUEST
               when 'EDITDATE' perform EDIT-DATE-FUNCTION
               when 'EDITGDAT' perform ACTION-GDAT-REQUEST
               when OTHER      add 16 to ZERO giving RETURN-CODE
                               move '0016' to STD-RESPONSE
           end-evaluate

           if  STD-RESPONSE = 20
           and STD-MESSAGE-TEXT = SPACES
               subtract STD-RESPONSE from STD-RESPONSE
           end-if

           GOBACK.

      *****************************************************************
      *    This routine will accept dates in the following formats
      *     ccyymmdd
      *      ccyy/mm/dd
      *      ccyy-mm-dd
      *      ccyy.mm.dd
      *****************************************************************
       ACTION-GDAT-REQUEST.
           move SPACES to DATE-WORK-ALPHA
           add 1 to ZERO giving IX-2
           move STD-GREGORIAN-4-EDIT to DATE-WORK-A-CCYY
           if  DATE-WORK-A-CCYY not NUMERIC
               move 'NOK for Date Value, CCYY not numeric value...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           else
               add 4 to IX-2
           end-if
      *    --------------------------------------------------------
      *    Possible non-numeric separator between CCYY and MM
           if  STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
               add 1 to IX-2
           end-if
           move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-MM
           if  DATE-WORK-A-MM not NUMERIC
               move DATE-WORK-A-MM(1:1) to DATE-WORK-A-MM(2:1)
               move ZERO                to DATE-WORK-A-MM(1:1)
               add 1 to IX-2
           else
               add 2 to IX-2
           end-if
      *    --------------------------------------------------------
      *    Possible non-numeric separator between MM and DD
           if  STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
               add 1 to IX-2
           end-if
           move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-DD
           if  DATE-WORK-A-DD not NUMERIC
               move DATE-WORK-A-DD(1:1) to DATE-WORK-A-DD(2:1)
               move ZERO                to DATE-WORK-A-DD(1:1)
           end-if
           if  DATE-WORK-A-MM not NUMERIC
               move 'NOK for Date Value, MM not numeric value...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           end-if
           if  DATE-WORK-A-DD not NUMERIC
               move 'NOK for Date Value, DD not numeric value...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           end-if
           move 'WIP for Date Function...' to MESSAGE-TEXT
           perform Z-POST-CONDITIONAL-TRACE
           move DATE-WORK-ALPHA to DATE-WORK-NUMERIC
           perform FUNCTION-LEAP-YEAR.

           perform FUNCTION-FOR-MONTH
           perform FUNCTION-FOR-DAY
           perform FUNCTION-CREATE-TXT-DATE
           perform FUNCTION-CREATE-NBR-DATE
           perform FUNCTION-CONVERT-GDATE-TO-JDATE
           perform FUNCTION-CALCULATE-DAYS-LEFT

           perform FUNCTION-DAY-OF-WEEK

      *    ------------------------------------------------------------
      *    Determine AOK for Date Message...
           move 'AOK for Date Function...' to MESSAGE-TEXT
           perform Z-POST-CONDITIONAL-TRACE

           exit.

      *****************************************************************
      *>   This routine will accept dates in the following formats
      *>     ccyymmdd
      *>     ccyy/mm/dd
      *>     ccyy-mm-dd
      *>     ccyy.mm.dd
      *****************************************************************
       EDIT-DATE-FUNCTION.
           move SPACES to DATE-WORK-ALPHA
           add 1 to ZERO giving IX-2
           move STD-GREGORIAN-4-EDIT to DATE-WORK-A-CCYY
           if  DATE-WORK-A-CCYY not NUMERIC
               move 'NOK for Date Value, CCYY not numeric value...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           else
               add 4 to IX-2
           end-if
      *>   --------------------------------------------------------
      *>   Possible non-numeric separator between CCYY and MM
           if  STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
               add 1 to IX-2
           end-if
           move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-MM
           if  DATE-WORK-A-MM not NUMERIC
               move DATE-WORK-A-MM(1:1) to DATE-WORK-A-MM(2:1)
               move ZERO                to DATE-WORK-A-MM(1:1)
               add 1 to IX-2
           else
               add 2 to IX-2
           end-if
      *>   --------------------------------------------------------
      *>   Possible non-numeric separator between MM and DD
           if  STD-GREGORIAN-4-EDIT(IX-2:1) not NUMERIC
               add 1 to IX-2
           end-if
           move STD-GREGORIAN-4-EDIT(IX-2:2) to DATE-WORK-A-DD
           if  DATE-WORK-A-DD not NUMERIC
               move DATE-WORK-A-DD(1:1) to DATE-WORK-A-DD(2:1)
               move ZERO                to DATE-WORK-A-DD(1:1)
           end-if
           if  DATE-WORK-A-MM not NUMERIC
               move 'NOK for Date Value, MM not numeric value...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           end-if
           if  DATE-WORK-A-DD not NUMERIC
               move 'NOK for Date Value, DD not numeric value...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           end-if
           move 'WIP for Date Function...' to MESSAGE-TEXT
           perform Z-POST-CONDITIONAL-TRACE
           move DATE-WORK-ALPHA to DATE-WORK-NUMERIC
      *   ------------------------------------------------------------
      *   Determine if a leap year, it is not true that every fourth
      *   year is a leap year.
      *
      *   if CCYY is divisible by 4 it is a  leap year
      *      except
      *      if divisible by 100 then it is not a leap year
      *         except
      *         if divisible by 400 then it is a leap year
      *            except
      *            if divisible by 4000 then it is not a leap year.
      *
      *    1600,2000, etc... are leap years
      *    1700,1800,1900 are not leap years
      *    4000,8000,etc... are not leap years
      *
      *    In other words the 100th year increments are not leap
      *    years with the exception that every 400th year increment
      *    is a leap year except every 4000th year is not a leap year.
      *
           move 'N' to STD-LEAP-YEAR-YN
           add 28 to ZERO giving MONTH-COUNT-OF-DAYS(2)
           move 'WIP for Date, not a Leap Year...' to MESSAGE-TEXT
           divide DATE-WORK-N-CCYY by 4 giving WORK-N-7
           multiply 4 by WORK-N-7
           if  WORK-N-7 = DATE-WORK-N-CCYY
               divide DATE-WORK-N-CCYY by 100 giving WORK-N-7
               multiply 100 by WORK-N-7
               if  WORK-N-7  = DATE-WORK-N-CCYY
                   divide DATE-WORK-N-CCYY by 400 giving WORK-N-7
                   multiply 400 by WORK-N-7
                   if  WORK-N-7 = DATE-WORK-N-CCYY
                       divide DATE-WORK-N-CCYY by 4000 giving WORK-N-7
                       multiply 4000 by WORK-N-7
                       if  WORK-N-7 not = DATE-WORK-N-CCYY
                           move 'Y' to STD-LEAP-YEAR-YN
                       end-if
                   end-if
               else
                   move 'Y' to STD-LEAP-YEAR-YN
               end-if
               if  STD-LEAP-YEAR-YN = 'Y'
                   move 'Y' to STD-LEAP-YEAR-YN
                   add 29 to ZERO giving MONTH-COUNT-OF-DAYS(2)
                   move 'WIP for Date, it is a Leap Year...'
                     to MESSAGE-TEXT
               end-if
           end-if
           perform Z-POST-CONDITIONAL-TRACE
      *>   ------------------------------------------------------------
      *>   Test for a valid month...
           if  DATE-WORK-N-MM > 0
           and DATE-WORK-N-MM < 13
               move 'WIP for Date, month is ?????????' to MESSAGE-TEXT
               move MONTH-VERBAGE(DATE-WORK-N-MM)
                 to MESSAGE-TEXT(24:10)
               perform Z-POST-CONDITIONAL-TRACE
               move MONTH-VERBAGE(DATE-WORK-N-MM)
                 to MESSAGE-TEXT(24:10)
               move MONTH-VERBAGE(DATE-WORK-N-MM) to STD-MONTH-VERBAGE
           else
               move 'NOK for Date Value, MM not 1 through 12...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND

           end-if
      *>   ------------------------------------------------------------
      *>   Test for a valid day...
           if  DATE-WORK-N-DD > 0
           and DATE-WORK-N-DD < MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM) + 1
               move 'WIP for Date, month has ?? days' to MESSAGE-TEXT
               move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
                 to MESSAGE-TEXT(25:2)
               perform Z-POST-CONDITIONAL-TRACE
           else
               move 'NOK for Day Value, DD not within month range...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           end-if
           move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
             to STD-MM-DAYS

      *>   ------------------------------------------------------------
      *>   Create text version of the date. This is a sixteen character
      *>   field (DATE-VERBAGE) that is left-justified in the following
      *>   format...      month dd, ccyy
           move 'WIP for Date, ' to MESSAGE-TEXT
           move MONTH-VERBAGE(DATE-WORK-N-MM) to DATE-VERBAGE
           subtract IX-2 from IX-2
           inspect DATE-VERBAGE tallying IX-2
                   for CHARACTERS before SPACE
           add 2 to IX-2
           if  DATE-WORK-A-DD(1:1) = '0'
               move DATE-WORK-A-DD(2:1) to DATE-VERBAGE(IX-2:1)
               add 1 to IX-2
           else
               move DATE-WORK-A-DD to DATE-VERBAGE(IX-2:2)
               add 2 to IX-2
           end-if
           move ', ' to DATE-VERBAGE(IX-2:2)
           add 2 to IX-2
           move DATE-WORK-N-CCYY to DATE-VERBAGE(IX-2:4)

           move DATE-VERBAGE to MESSAGE-TEXT(15:18)
           perform Z-POST-CONDITIONAL-TRACE

           move DATE-VERBAGE to STD-DATE-VERBAGE

      *>   ------------------------------------------------------------
      *>   Create numeric date for display or print...
           move DATE-WORK-A-CCYY   to STD-DATE-EDITED
           move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(5:1)
           move DATE-WORK-A-MM     to STD-DATE-EDITED(6:2)
           move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(8:1)
           move DATE-WORK-A-DD     to STD-DATE-EDITED(9:2)
           move DATE-WORK-NUMERIC  to STD-GREGORIAN-DATE

      *>   ------------------------------------------------------------
      *>   Determine Julian Date...
           move 'WIP for Date, Julian is CCYYDDD' to MESSAGE-TEXT
           move DATE-WORK-N-CCYY to JULIAN-CCYY
           add DATE-WORK-N-DD to ZERO giving JULIAN-DDD
           add 1 to ZERO giving IX-2
           perform until IX-2 = DATE-WORK-N-MM
                      or IX-2 > 12
               add MONTH-COUNT-OF-DAYS(IX-2) to JULIAN-DDD
               add 1 to IX-2
           end-perform
           move JULIAN-DATE to MESSAGE-TEXT(25:7)
           perform Z-POST-CONDITIONAL-TRACE
           move JULIAN-DATE to STD-JULIAN-DATE

      *>   ------------------------------------------------------------
      *>   Calculate remaining days in the year...
           if  STD-LEAP-YEAR-YN = 'Y'
               subtract STD-JULIAN-DAY from 366
                 giving STD-DAYS-REMAINING
           else
               subtract STD-JULIAN-DAY from 365
                 giving STD-DAYS-REMAINING
           end-if

      *>   ------------------------------------------------------------
      *>   Determine AOK for Date Message...
           move 'AOK for Date Function...' to MESSAGE-TEXT
           perform Z-POST-CONDITIONAL-TRACE
           exit.

      *****************************************************************
       FUNCTION-CREATE-TXT-DATE.
      *    ------------------------------------------------------------
      *    Create text version of the date. This is a sixteen character
      *    field (DATE-VERBAGE) that is left-justified in the following
      *    format...      month dd, ccyy
           move 'WIP for Date, ' to MESSAGE-TEXT
           move MONTH-VERBAGE(DATE-WORK-N-MM) to DATE-VERBAGE
           subtract IX-2 from IX-2
           inspect DATE-VERBAGE tallying IX-2
                   for CHARACTERS before SPACE
           add 2 to IX-2
           if  DATE-WORK-A-DD(1:1) = '0'
               move DATE-WORK-A-DD(2:1) to DATE-VERBAGE(IX-2:1)
               add 1 to IX-2
           else
               move DATE-WORK-A-DD to DATE-VERBAGE(IX-2:2)
               add 2 to IX-2
           end-if
           move ', ' to DATE-VERBAGE(IX-2:2)
           add 2 to IX-2
           move DATE-WORK-N-CCYY to DATE-VERBAGE(IX-2:4)

           move DATE-VERBAGE to MESSAGE-TEXT(15:18)
           perform Z-POST-CONDITIONAL-TRACE

           move DATE-VERBAGE to STD-DATE-VERBAGE
           exit.

      *****************************************************************
       FUNCTION-DAY-OF-WEEK.
      *    Determine the Day of a week as a number and text.
      *   ----------------------------------------------------------- *
           move ZERO to STD-DAY-OF-WEEK-NBR
           move 'Unknown   ' to STD-DAY-OF-WEEK-TXT
           add 1600001 to ZERO giving DDF-JULIAN-DATE-1
           move STD-JULIAN-DATE to DDF-JULIAN-DATE-2
           perform FUNCTION-DATE-DIFFERENCE
           divide DDF-DIFFERENCE-IN-DAYS by 7
           giving DIFF-OF-WEEKS remainder DOW-IDX
           evaluate DOW-IDX
             when 0     add 6 to ZERO giving STD-DAY-OF-WEEK-NBR
             when 1     add 7 to ZERO giving STD-DAY-OF-WEEK-NBR
             when 2     add 1 to ZERO giving STD-DAY-OF-WEEK-NBR
             when 3     add 2 to ZERO giving STD-DAY-OF-WEEK-NBR
             when 4     add 3 to ZERO giving STD-DAY-OF-WEEK-NBR
             when 5     add 4 to ZERO giving STD-DAY-OF-WEEK-NBR
             when 6     add 5 to ZERO giving STD-DAY-OF-WEEK-NBR
           end-evaluate
           if  STD-DAY-OF-WEEK-NBR > 0
           and STD-DAY-OF-WEEK-NBR < 8
               move DOW-VERBAGE(STD-DAY-OF-WEEK-NBR)
                 to STD-DAY-OF-WEEK-TXT
           else
               move ZERO to STD-DAY-OF-WEEK-NBR
               move 'Unknown   ' to STD-DAY-OF-WEEK-TXT
           end-if
           exit.

      *****************************************************************
       FUNCTION-LEAP-YEAR.
      *   ----------------------------------------------------------- *
      *   Determine if a leap year, it is not true that every fourth
      *   year is a leap year.
      *
      *   if CCYY is divisible by 4 it is a  leap year
      *      except
      *      if divisible by 100 then it is not a leap year
      *         except
      *         if divisible by 400 then it is a leap year
      *            except
      *            if divisible by 4000 then it is not a leap year.
      *
      *    1600,2000, etc... are leap years
      *    1700,1800,1900 are not leap years
      *    4000,8000,etc... are not leap years
      *
      *    In other words the 100th year increments are not leap
      *    years with the exception that every 400th year increment
      *    is a leap year except every 4000th year is not a leap year.
      *
           move 'N' to STD-LEAP-YEAR-YN
           add 28 to ZERO giving MONTH-COUNT-OF-DAYS(2)
           move 'WIP for Date, not a Leap Year...' to MESSAGE-TEXT
           divide DATE-WORK-N-CCYY by 4 giving WORK-N-7
           multiply 4 by WORK-N-7
           if  WORK-N-7 = DATE-WORK-N-CCYY
               divide DATE-WORK-N-CCYY by 100 giving WORK-N-7
               multiply 100 by WORK-N-7
               if  WORK-N-7  = DATE-WORK-N-CCYY
                   divide DATE-WORK-N-CCYY by 400 giving WORK-N-7
                   multiply 400 by WORK-N-7
                   if  WORK-N-7 = DATE-WORK-N-CCYY
                       divide DATE-WORK-N-CCYY by 4000 giving WORK-N-7
                       multiply 4000 by WORK-N-7
                       if  WORK-N-7 not = DATE-WORK-N-CCYY
                           move 'Y' to STD-LEAP-YEAR-YN
                       end-if
                   end-if
               else
                   move 'Y' to STD-LEAP-YEAR-YN
               end-if
               if  STD-LEAP-YEAR-YN = 'Y'
                   move 'Y' to STD-LEAP-YEAR-YN
                   add 29 to ZERO giving MONTH-COUNT-OF-DAYS(2)
                   move 'WIP for Date, it is a Leap Year...'
                     to MESSAGE-TEXT
               end-if
           end-if
           perform Z-POST-CONDITIONAL-TRACE

           exit.

      *****************************************************************
       FUNCTION-FOR-MONTH.
      *    ------------------------------------------------------------
      *    Test for a valid month...
           if  DATE-WORK-N-MM > 0
           and DATE-WORK-N-MM < 13
               move 'WIP for Date, month is ?????????' to MESSAGE-TEXT
               move MONTH-VERBAGE(DATE-WORK-N-MM)
                 to MESSAGE-TEXT(24:10)
               perform Z-POST-CONDITIONAL-TRACE
               move MONTH-VERBAGE(DATE-WORK-N-MM)
                 to MESSAGE-TEXT(24:10)
               move MONTH-VERBAGE(DATE-WORK-N-MM) to STD-MONTH-VERBAGE
           else
               move 'NOK for Date Value, MM not 1 through 12...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND

           end-if
           exit.

      *****************************************************************
       FUNCTION-FOR-DAY.
      *    ------------------------------------------------------------
      *    Test for a valid day...
           if  DATE-WORK-N-DD > 0
           and DATE-WORK-N-DD < MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM) + 1
               move 'WIP for Date, month has ?? days' to MESSAGE-TEXT
               move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
                 to MESSAGE-TEXT(25:2)
               perform Z-POST-CONDITIONAL-TRACE
           else
               move 'NOK for Day Value, DD not within month range...'
                 to MESSAGE-TEXT
               perform Z-POST-ABEND
           end-if
           move MONTH-COUNT-OF-DAYS(DATE-WORK-N-MM)
             to STD-MM-DAYS
           exit.

      *****************************************************************
       FUNCTION-CREATE-NBR-DATE.
      *    ------------------------------------------------------------
      *    Create numeric date for display or print...
           move DATE-WORK-A-CCYY   to STD-DATE-EDITED
           move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(5:1)
           move DATE-WORK-A-MM     to STD-DATE-EDITED(6:2)
           move STD-DATE-EDIT-BYTE to STD-DATE-EDITED(8:1)
           move DATE-WORK-A-DD     to STD-DATE-EDITED(9:2)
           move DATE-WORK-NUMERIC  to STD-GREGORIAN-DATE
           exit.

      *****************************************************************
       FUNCTION-CONVERT-GDATE-TO-JDATE.
      *    ------------------------------------------------------------
      *    Determine Julian Date...
           move 'WIP for Date, Julian is CCYYDDD' to MESSAGE-TEXT
           move DATE-WORK-N-CCYY to JULIAN-CCYY
           add DATE-WORK-N-DD to ZERO giving JULIAN-DDD
           add 1 to ZERO giving IX-2
           perform until IX-2 = DATE-WORK-N-MM
                      or IX-2 > 12
               add MONTH-COUNT-OF-DAYS(IX-2) to JULIAN-DDD
               add 1 to IX-2
           end-perform
           move JULIAN-DATE to MESSAGE-TEXT(25:7)
           perform Z-POST-CONDITIONAL-TRACE
           move JULIAN-DATE to STD-JULIAN-DATE
           exit.

      *****************************************************************
       FUNCTION-CALCULATE-DAYS-LEFT.
      *    ------------------------------------------------------------
      *    Calculate remaining days in the year...
           if  STD-LEAP-YEAR-YN = 'Y'
               subtract STD-JULIAN-DAY from 366
                 giving STD-DAYS-REMAINING
           else
               subtract STD-JULIAN-DAY from 365
                 giving STD-DAYS-REMAINING
           end-if
           exit.



      *****************************************************************
       FUNCTION-DATE-DIFFERENCE.
      *    Calculate difference of years...
           subtract DDF-JULIAN-CCYY-1 from DDF-JULIAN-CCYY-2
             giving DIFF-OF-YEARS
      *    Calculate difference of days...
           subtract DIFF-OF-DAYS from DIFF-OF-DAYS
           if  DIFF-OF-YEARS = 0
               subtract DDF-JULIAN-DAY-1 from DDF-JULIAN-DAY-2
                 giving DIFF-OF-DAYS
           else
               add DDF-DAYS-REMAINING-1 to DIFF-OF-DAYS
               add DDF-JULIAN-DAY-2     to DIFF-OF-DAYS
           end-if
      *    Calculate for multiple years ignoring leap years
           if  DIFF-OF-YEARS > 1
               subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
               multiply 365 by MULTIPLE-YEARS giving REGISTER-7-0
               add REGISTER-7-0 to DIFF-OF-DAYS
           end-if
      *    Adjust difference of days for leap-year cycle...
           if  DIFF-OF-YEARS > 1
               perform FUNCTION-DATE-DIFF-LEAP
               add NUMBER-OF-LEAP-YEARS to DIFF-OF-DAYS
           end-if
           add DIFF-OF-DAYS to ZERO giving DDF-DIFFERENCE-IN-DAYS
           exit.

      *****************************************************************
       FUNCTION-DATE-DIFF-LEAP.
      *    Calculate years to next leap year...
           divide DDF-JULIAN-CCYY-1 by 4 giving MULTIPLE-YEARS
                  remainder HOLD-REMAINDER-1
      *    Calculate number of years between primary and secondary...
           subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
           add HOLD-REMAINDER-1 to MULTIPLE-YEARS
           divide MULTIPLE-YEARS by 4 giving NUMBER-OF-LEAP-YEARS
      *    Adjust difference of days for 400-year leap-year cycle...
           perform FUNCTION-DATE-DIFF-LEAP-400
           exit.

      *****************************************************************
       FUNCTION-DATE-DIFF-LEAP-400.
      *    Calculate years to next leap year 400 exception...
           divide DDF-JULIAN-CCYY-1 by 400 giving MULTIPLE-YEARS
                  remainder HOLD-REMAINDER-2
      *    Calculate number of years between primary and secondary...
           subtract 1 from DIFF-OF-YEARS giving MULTIPLE-YEARS
           add HOLD-REMAINDER-2 to MULTIPLE-YEARS
           divide MULTIPLE-YEARS by 400 giving REGISTER-7-0
           subtract REGISTER-7-0 from NUMBER-OF-LEAP-YEARS
      *    Adjust difference of days for 4-year leap-year cycle...
           exit.




      *****************************************************************
      *    Display Copyright or Program Message...
      *    ------------------------------------------------------------
       Z-POST-ABEND.
           if  MESSAGE-TEXT not = SPACES
               move MESSAGE-TEXT to STD-MESSAGE-TEXT
               perform Z-POST-MESSAGE
           end-if
           move 'Program is ABENDING...' to MESSAGE-TEXT
           perform Z-POST-MESSAGE
           perform Z-POST-CONSOLE
           add 16 to ZERO giving STD-RESPONSE
           GOBACK.

       Z-POST-COPYRIGHT.
           display SIM-TITLE     upon console
           display SIM-COPYRIGHT upon console
           exit.

       Z-POST-CONSOLE.
           display MESSAGE-BUFFER upon console
           exit.

       Z-POST-MESSAGE.
           display MESSAGE-BUFFER upon console
           move SPACES to MESSAGE-TEXT
           exit.

       Z-POST-CONDITIONAL-TRACE.
           if  STD-DEBUG-INFO = 'DEBUG   '
           or  STD-DEBUG-INFO = 'TRACE   '
               display MESSAGE-BUFFER upon console
           end-if
           move SPACES to MESSAGE-TEXT
           exit.
      *****************************************************************
      *      This example is provided by SimoTime Technologies        *
      *        Our e-mail address is: helpdesk@simotime.com           *
      *     Also, visit our Web Site at http://www.simotime.com       *
      *****************************************************************

Table of Contents Previous Section Next Section The COBOL Copy File

The following (PASSBITS.cpy) is the COBOL copy file that may be used when calling SimoDATE.

      *****************************************************************
      *     Data Structure or Pass Area used for calling SIMODATE.    *
      *****************************************************************
      *         Copyright (C) 1987-2015 SimoTime Technologies         *
      *                     All Rights Reserved                       *
      *****************************************************************
      *              Provided by SimoTime Technologies                *
      *        Our e-mail address is: helpdesk@simotime.com           *
      *     Also, visit our Web Site at http://www.simotime.com       *
      *****************************************************************
      * STD-REQUEST          - This is an eight character data string
      *                        and should contain the following in
      *                        upper case.
      *                        EDITDATE, This keyword causes the date
      *                        routine (SIMODATE) to validate the date
      *                        and provide an edited text string plus
      *                        a julian date and more.
      *                        EDITJDAT, WIP
      *                        The calling program must provide the
      *                        above as a request. Otherwise, a non-
      *                        zero return code will be set in the
      *                        following result field. This data string
      *                        is not changed by the date routine.
      *
      * STD-RESPONSE         - This is a four byte binary data string
      *                        and is used by the conversion routine to
      *                        pass a return code. If the date request
      *                        is successful the value in this data
      *                        string will be zero.
      *
      * STD-MESSAGE-TEXT     - If a non-zero response occurs this field
      *                        will contain a short message.
      *
      * STD-GREGORIAN-4-EDIT - This is the input date field in
      *                        gregorian format that will be validated.
      *                        If the gregorian date does not pass the
      *                        editing process a message will be posted
      *                        in the STD-MESSAGE-TEXT field and a
      *                        non-zero value of 16 will be placed in
      *                        the STD-RESPONSE field. SimoDATE is
      *                        somewhat flexible in accepting and
      *                        reformatting a gregorian date. For
      *                        example, the following are acceptable
      *                        and will be reformatted into the
      *                        STD-GREGORIAN-4-EDIT field.
      *                        ccyymmdd   This is the preferred format.
      *                        ccyy-mm-dd Special characters may be
      *                                   used as separators.
      *                        ccyy-m-d   Single digit month and day
      *                                   values are acceptable when
      *                                   delimiter are used.
      *                        ccyy/m/dd  A mixing of single digit
      *                                   usage is accepted.
      *
      * STD-DEBUG-INFO       - This data string provides additional
      *                        debugging capability. This may be
      *                        helpful if changes are made to the date
      *                        routine.
      *
      * STD-LEAP-YEAR-YN     - This field is used to identify a leap
      *                        year. A "Y" indicates the input date is
      *                        a leap year. An "N" indicates the input
      *                        year is not a leap year.
      *
      * STD-MONTH-VERBAGE    - This field is used for the text of the
      *                        input month. For example, 1=January,
      *                        2=February, etc.
      *
      * STD-MM-DAYS          - This field is used for the number of
      *                        days in the input month.
      *
      * STD-GREGORIAN-DATE   - This field is used for the gregorian
      *                        date in ccyymmdd format (all numeric
      *                        values).
      *
      * STD-JULIAN-DATE      - This field is used for the julian date
      *                        in ccyyddd format.
      *
      * STD-DAYS-REMAINING   - The number of days remaining in the
      *                        year.
      *
      * STD-DATE-VERBAGE     - This field is used for the date in text
      *                        format. For example, 19991225 will
      *                        produce a text string of
      *                        December 25, 1999.
      *
      * STD-DATE-EDIT-BYTE   - This field contains the character that
      *                        will be used to edit and format the
      *                        gregorian date. For example, this field
      *                        may contain a space, a dash, a slash,
      *                        etc... and will be used as the delimiter
      *                        between the year, month and day.
      *
      * STD-DATE-EDITED      - This field if for the edited date using
      *                        the delimiter character from the
      *                        preceding field. For example, 19991225
      *                        will produce 1999/12/25 if the delimiter
      *                        character is a slash.
      * STD-DAY-OF-WEEK      - WIP, 1-7 is Sunday through Saturday.
      *****************************************************************
      *
       01  STD-SIMODATE.
           05  STD-REQUEST             pic X(8).
           05  STD-RESPONSE            pic 9(4).
           05  STD-MESSAGE-TEXT        pic X(68).
           05  STD-GREGORIAN-4-EDIT    pic X(10).
           05  STD-EDITED-INFO.
               10  STD-DEBUG-INFO      pic X(8).
               10  STD-LEAP-YEAR-YN    pic X.
               10  STD-MONTH-VERBAGE   pic X(10).
               10  STD-MM-DAYS         pic 99.
               10  STD-GREGORIAN-DATE  pic 9(8).
               10  STD-JULIAN-DATE     pic 9(7).
               10  STD-JULIAN-VALUE    redefines STD-JULIAN-DATE.
                   15  STD-JULIAN-CCYY pic 9(4).
                   15  STD-JULIAN-DAY  pic 9(3).
               10  STD-DAYS-REMAINING  pic 9(3).
               10  STD-DATE-VERBAGE    pic X(18).
               10  STD-DATE-EDIT-BYTE  pic X.
               10  STD-DATE-EDITED-14.
                   15  STD-DATE-DAY    pic X(3).
                   15  STD-DATE-DAY-2  pic X.
                   15  STD-DATE-EDITED pic X(10).
           05  STD-DAY-OF-WEEK.
               10  STD-DAY-OF-WEEK-NBR pic 9.
               10  STD-DAY-OF-WEEK-TXT pic X(10).
      ***  PASSDATE - End-of-Copy File - - - - - - - - - - - PASSDATE *
      *****************************************************************
      *

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Note: The latest versions of the SimoTime Documents and Program Suites are available on the Internet and may be accessed using the Link to Internet icon. If a user has a SimoTime Enterprise License the Documents and Program Suites may be available on a local server and accessed using the Link to Server icon.

Link to Internet   Link to Server   Explore How to Determine the Difference in Two Dates with the difference being calcualted in days.

Link to Internet   Link to Server   Explore the COBOL Connection for more examples of COBOL programming techniques and sample code.

Link to Internet   Link to Server   Explore The ASCII and EBCDIC Translation Tables. These tables are provided for individuals that need to better understand the bit structures and differences of the encoding formats.

Link to Internet   Link to Server   Explore The File Status Return Codes to interpret the results of accessing VSAM data sets and/or QSAM files.

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This suite of programs and documentation is available to download for review and evaluation purposes. Other uses will require a SimoTime Software License. Link to an Evaluation zPAK Option that includes the program members, documentation and control files.

A good place to start is The SimoTime Home Page via Internet Connect for access to white papers, program examples and product information.

Explore The Micro Focus Web Site via Internet Connect for more information about products and services available from Micro Focus.

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The COBOL Source Code for Date Validation and Formatting
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