"On Saturday, September 10, 2011, at 9 am your local time, roll out your mat and do yoga. Join your community to move, breathe, connect and get your downdog on!"
Go to http://www.salutationnation.com/ to find the one closest to you! The Chicago one is happening at the Oak Street Beach. You can RSVP on Facebook, if you'd like... more details are posted there as well -> https://www.facebook.com/event.php?eid=249153698438160