Phoe6 writes "I and my friends were having a dinner table discussion as which days we would look forward to in the year 2009. Pi day (3/14 in MM/DD format and 22/7 in DD/MM format), then Mole day(6/23) struck in my mind. There is Towel's Day, worthy of note and then Newtonmas which we had just celebrated. What are other secular and scientific holidays that you would look for? Starting of the LHC again?"