Yesterday evening was the start of the Persian New Year, Norooz. It's basically the best holiday ever. You get to grow wheat and put out bowls of vinegar and garlic and get some goldfish and jump over fires and have a picnic. It's a celebration of life, rebirth, of spring, of things changing and becoming new again.
Here are some of the traditional things to do: http://www.norooz.ca/ncustom.html
Ye Olde Wikipedia with more details: http://en.wikipedia.org/wiki/Norouz