I don't know what version of kix you are using, but here is how to do it with kix2001.
time calculation is something you can find out for yourself by BB's search feature.
here is the rest part where $date is the date and $name is the name
code:

$file = "your_file"
$ = open(1,$file)
$line = readline(1)
while @error = 0
 $temp = split($line,",")
 $name = substr($temp[0],1,len($temp[0])-1)
 $date = $temp[5]
    ;do time compare here
    ;and with result do something.
 $line = readline(1)
loop
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!

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