National Oysters on the Half Shell Day and National Clam Day in USA
National Oysters on the Half Shell Day and National Clam Day in USA is held on March 31. This event in the third decade of the month march is annual.
Thomas Mundy Peterson Day on March 31 (New Jersey, United States);
Transfer Day in US Virgin Islands on March 31 (is a truly historic celebration of the day in 1917 that the United States officially purchased the Virgin Islands from Denmark);
Fossil Fools Day in United States and Canada on April 1 (For those environmentally-minded pranksters out there, Fossil Fools Day is a strange mix of April Fools' day and Earth Day and it takes place each year on April 1. It began in 2004 in the United States and Canada to hold coordinated action against the not-so-funny use of fossil fuels to derive energy);