PGM
/* Calculate last month beginning and ending dates */
    DCL        VAR(&THISDAY) TYPE(*CHAR) LEN(2)
    DCL        VAR(&ADJ) TYPE(*CHAR) LEN(3)
    DCL        VAR(&WKDATE) TYPE(*CHAR) LEN(10)
    DCL        VAR(&EOML) TYPE(*CHAR) LEN(10)
    DCL        VAR(&BOML) TYPE(*CHAR) LEN(10)
/* Adjustment is minus day value of today in system date*/
    RTVSYSVAL  SYSVAL(QDAY) RTNVAR(&THISDAY)
    CHGVAR     VAR(&ADJ) VALUE('-' *TCAT &THISDAY)
/* Last day of last month */
    DATEADJ    INDATE(*SYSTEM) OUTDATE(&EOML) ADJAMT(&ADJ)
/* 1st day of this month */
    DATEADJ    INDATE(&EOML) OUTDATE(&WKDATE) ADJAMT(1)
/* 1st day of last month */
    DATEADJ    INDATE(&WKDATE) OUTDATE(&BOML) ADJAMT(-1) +
                ADJTYPE(*MONTHS) INFMT('*SYSTEM')
    SNDMSG     MSG('Last month is' *BCAT &BOML *BCAT +
                'through' *BCAT &EOML) TOUSR(*REQUESTER)
ENDPGM