Common Include Date Utility to Set Calendar Beginning and End Dates

-* common logic to calculate YYMD beginning and ending dates for current month 

-* date functions like DATEMOV and DATEADD need offset, not the string, so use DATECVT to make offset values 
-SET &TODAY_YYMD = &YYMD; 
-SET &TODAY_OFFSET = DATECVT(&TODAY_YYMD,'I8YYMD', 'YYMD');         
-* -TYPE TODAY_OFFSET=&TODAY_OFFSET 

-* using today, calculate beginning and ending of this month 
-SET &TODAY_BOM_OFFSET = DATEMOV(&TODAY_OFFSET, 'BOM'); 
-SET &TODAY_YYMD_BOM = DATECVT(&TODAY_BOM_OFFSET,'MDYY','A8YYMD'); 
-SET &TODAY_EOM_OFFSET = DATEMOV(&TODAY_OFFSET, 'EOM'); 
-SET &TODAY_YYMD_EOM = DATECVT(&TODAY_EOM_OFFSET,'MDYY','A8YYMD');     

-TYPE ............................................................
-TYPE TODAY_YYMD=&TODAY_YYMD 
-TYPE TODAY_YYMD_BOM=&TODAY_YYMD_BOM 
-TYPE TODAY_YYMD_EOM=&TODAY_YYMD_EOM 
-TYPE ............................................................