National Agriculture day has been celebrated annually since 1973 in America on the first day of spring (Northern Hemisphere spring, that is.) It is organized by The Agriculture Council of America, a non-profit organization. The day is designed to educate people about the role of agriculture, and to encourage young people to consider careers in it.
The 20th of March is Ravioli Day! If it's a weekend, see if you can talk a group of friends into coming round in the afternoon and making the Ravioli for dinner from scratch. If it's a weeknight, well, you can cheat and buy a canned version, and call it Canned Ravioli Day.