Checked out some night game last night with a buddy. Woke up just a little before noon and had an epiphany:
If the best time to meet party girls is Friday and Saturday night, then the best time to filter them out during the day is Saturday and Sunday morning, when they're sleeping.
Not sure why I hadn't thought of this before. I guess I just went for the presumably higher-traffic weekend afternoon daygame hours, and made the faulty assumption that daygame exists in a vacuum.