With Friday's episode of 'Psych', we can adjust its timeline so that it's now taking place at the same time it's being broadcast. That's because Cybill Shepherd was not around for the first time since the new season began (and technically, since the old season ended). As she was only visiting, all of the previous episodes had to take place soon after her arrival as the cliff-hanger of last season - back in February.
So the treasure hunt with Uncle Jack can be considered as taking place in August of 2008.
Unless there's some inner chronological detail that I'm missing.....?