The deadline which appears on the main screen is the date by which you should try to put your packet in the mail, not the date by which it should arrive at command central.

My current inclination is to set the deadline on a Monday so that working folk will have a chance to devote their weekends to Archipelago. If you find the deadlines coming too soon or not soon enough, give a holler. We need to arrive at a rhythm that is reasonably comfortable for all.