there's now a National Non-fiction Writing Month:
http://writenonfictionnow.com/about-wri ... onfiwrimo/
Unfortunately, both are in November, so unless you're super disciplined, you'll have to choose which to adopt.
Here's a bit of the latter's history:
In October 2007, a year after Nina Amir participated in National Novel Writing Month (NaNoWriMo), she asked herself, “What’s a nonfiction writer supposed to do during November?” Searching around in the NaNoWriMo forums, she discovered NaNoRebels. Participating as a rebel might be fine for some nonfiction writers, but not for Nina. Although she has a rebellious nature, she wanted to participate in a legitimate manner.
So, Nina gave birth to Write Nonfiction in November (WNFIN), aka National Nonfiction Writing Month (NaNonFiWriMo). Unlike its fiction counterpart, NaNonFiWriMo is not a contest and offers no word-counting mechanism to deem anyone a winner. It’s a personal challenge conducted on the honor system to start and finish a work of nonfiction in 30 days—any work of nonfiction. If you meet your goal, you get the personal satisfaction of knowing you did so—and a manuscript, or maybe several manuscripts, with which to pursue publication.
I've always thought that, if I wanted to do a one-month writing blitz of non-fiction, I'd just cheat and pretend it was a novel. This makes it legitimate. Details at the website above.
Now if they'd just drop the "National" from both names, so those outside the U.S aren't technically cheating by joining in.
--Michael W. Perry, My Nights with Leukemia: Caring for Children with Cancer (definitely non-fiction, but written over some seven months)