From the site:
It's 10.10.10! The World is Filming Every Nation, 24 hours, and You.
It's October 10, 2010 (10.10.10), across the planet, documentary filmmakers, students, and inspired citizens are recording the human experience over a 24-hour period and contributing their voice to the largest participatory media event in history. Founded in 2008, ONE DAY ON EARTH is creating an online community, shared archive, and film. Together, we will showcase the amazing diversity, conflict, tragedy, and triumph that occur in one day.
We invite you to join our international community of thousands of filmmakers, hundreds of schools, and dozens of non-profits, and contribute to this unique global mosaic. Through the One Day on Earth platform, we will establish a community that not only watches, but participates. 10.10.10 isn't over you can still take part.