That depends on when the pinch hit prompt goes out and that depends on when someone drops out of the fest. For a prompt to go out today, the due date would remain the same as there is nearly two months until the due date. However, if an extension is needed it would most likely be granted. For pinch hit prompts that go out near the due date, we'd have to come up with a new due date for that person at that time. It's usually something I work out with each pinch-hitter.