When: Tuesday, April 7, 2009 7:00-8:00 p.m. pacific
DL: ctf_aerospace_b4.zip pre-event DL strongly recommended for this one
Extended playtime is an event intended to promote a specific custom map and the server simultaneously. Your attendance at these events will help draw players to the server, which in turn helps spread the word about the featured map and promotes public acceptance of custom maps in general.
I'm really looking forward to playing this map after running around in it a little bit...but I think the filesize is going to preclude very many people joining during the event (thus the strongly recommended pre-DL).