Re: July and August must Go!
"Also there was no Roman census conducted in Palestine over the period supposed and Rome never required such a move."
Rome wasn't even in control of Palestine at the time. It was under Herod's control - a character who even appears in the same sodding chapter.
Also, it wouldn't have been happening in December, since it mentions that the sheep were out in the fields. It is possible that the events were happening in February, however - some scholars believe the Romans kept to the old calendar, with March as New Year, until well into the imperial period.