For my own reference...
Ok, I have about 9,000 words and I haven't written anything yet today. I want to have 20,000 by the end of Sunday. I need 11,000 more words in three days, so that's ... about 3,650 words a day.
If I can just manage to write 4,000 words today, Saturday and Sunday, I'll be waaay ahead of the game. Here's hoping. (Mostly that my hands don't fall off)