Pi is very important to astronomy and its also somewhat a celebration of Albert Einstein's Birthday so: Happy National Pi Day!!!! www.piday.org http://en.wikipedia.org/wiki/Pi_day I celebrated by having a Hostess apple pie at 3:14pm today - but I guess a lot of people actually celebrated it at 1:59pm (i.e. 3/14 1:59pm). We are also celebrating with cherry, pumpkin and apple pies tonight. Clear skies, Dale.