Happy Birthday, Buddha :)
Links of interest:
Significance of Vesak - Buddha Day - a very good summary of the holiday from my first stop for Buddhist references.
Vesak - an attractive site with a nice perspective.
Vesak Lantern - how to make a Vesak lantern at home (a fun project for other holidays as well!)
E-cards - beautiful photographs to send as e-cards.
Moon Phases and Moon Chart - for folks who want to know to the day and minute when their lunar holidays occur.
