Is it possible?
Is it easy to do?
You could setup mod_rewrite like this:
RewriteRule ^([00-99])/([1-12])/([1-31])$ index.php?get_year=$1&get_month=$2&get_day=$3
But unfortunately, the simple mod_rewrite rule would only be a small part.
The larger part would be getting Pixelpost to understand URLs like that.
Which is not an easy task.