This works for me:

use strict;
use warnings;
use File::Find::Rule;

my @dirs = File::Find::Rule
    ->directory
    ->mtime( '>' . (time - (60 * 60 * 24 * 7)) )
    ->in( '.' )
;
print "$_\n" for @dirs;
[download]

The tricky part is what to pass to mtime() ... you need to subtract 7 days from the current Epoch (via time) and anything greater than that result falls within the past 7 days. You will need to install File::Find::Rule.

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)