Book Smugglers Day is a Lithuanian cultural observance held on March 16. It honors the people who defied a ban on Lithuanian language publications printed in the Latin alphabet within the Russian Empire.
Saint Urho's Day is an informal celebration of Finnish culture that originated in America. Despite its name, it is not an official church holiday. It was invented in 1956 by Richard Mattson, a Finnish-American from Minnesota.
Although we refer to artichokes as to vegetables, they are actually the flower buds of the plant. They are so delicious that deserve their own holiday. By the way, March 16 is National Artichoke Hearts Day.