If-Else-Then with today()

i am currently trying to write some code that goes through my data and marks a number 0-12 based off the date in the "Week" column. this number appears in a new column called group which is created by the code you see below. The problem is that this column is periods all the way down and not numbers. There are no errors messages in the log so i dont know where i went wrong (im fairly new to sas). PS. the dates range from 6/17 to 9/9

data have;
set have;
if today()+84 = Week > today()+79 then group=12;
else if today()+77 = Week > today()+72 then group=11;
else if today()+70 = Week > today()+65 then group=10;
else if today()+63 = Week > today()+58 then group=9;
else if today()+56 = Week > today()+51 then group=8;
else if today()+49 = Week > today()+45 then group=7;
else if today()+42 = Week > today()+37 then group=6;
else if today()+35 = Week > today()+30 then group=5;
else if today()+28 = Week > today()+23 then group=4;
else if today()+21 = Week > today()+16 then group=3;
else if today()+14 = Week > today()+11 then group=2;
else if today()+7  = Week > today()+2 then group=1;
else if today()    = Week > today()-5 then group=0;
run;