Obscure holidays:

• Pi Day (March 14, or “3/14”)
• Pi Approximation Day (22 July, or “22/7”)
• No Pants Day (the first Friday in May)
• National Talk In Elevators Day (the last Friday in July)
• National Underwear Day (August 11)
• International Orgy Day (September 3)
• International Talk Like a Pirate Day (September 19)
• Ask a Stupid Question Day (September 28)
• October Fool’s Day (October 1) (the Southern Hemisphere’s version of April Fool’s Day)
• Mole Day (6:02 on 10/23) (ask a chemist)

The first Friday the 13th of the year is “Blame Someone Else Day.”