I've just recently become aware of the Reason Rally scheduled to take place in Washington, D.C. on Saturday, March 24. Barring anything unexpected that might come up to prevent me from going, I am planning to attend.
If you haven't heard about it yet, here's the website for Reason Rally.
The Reason Rally is an event sponsored by many of the country’s largest and most influential secular organizations. It will be free to attend and will take place in Washington, D.C. on March 24th, 2012 from 10:00AM – 4:00PM at the National Mall. There will be music, comedy, speakers, and so much more.
If anyone from the New York area wants to go and is interested in carpooling, let me know and we'll see what we can work out. Just leave a message in the comments. I imagine some people will want to head down there Friday evening, though I'll more likely drive down very early in the morning and either return Saturday night or stay the night and return early Sunday.