According to Wikepedia, August 10th has been declared “International Biodiesel Day”.

Transesterification of a vegetable oil was conducted as early as 1853 by scientists E. Duffy and J. Patrick, many years before the first diesel engine became functional. Rudolf Diesel’s prime model, a single 10 ft (3 m) iron cylinder with a flywheel at its base, ran on its own power for the first time in Augsburg, Germany, on August 10, 1893.

I guess if we’re going to make special days for just about everything, heck, why not biodiesel?

Earth Day, the largest Green Celebration on the planet is only a few weeks away. The theme for Earth Day 2008 is “A Call for Climate.”

The Earth Day Network and Green Apple Festival are organizing 8 weekend long, Earth Day Celebrations from coast to coast. Enjoy art music and educational programs.

Just about every city has some sort of small grass roots Earth Day Festival… if you want to promote your local Earth Day Event post is here as a comment.