Found this article while browsing the forums that comes with my hosting company (both support and off topic are discussed there).
Jonathan Yaniv, the young man behind the idea, has a goal set to get 1 million Canadians participating in the event, not all at the same place though.
Maybe it is a needed day, to promote love and caring.
But frankly I’d say that any day is good for sex as long as you got the right person to do it with, and are in the right mood of course 🙂