Today Iranian's celebrate Norouz, it is a celebration of the 1st day of spring, the spring Equinox. Read about their Customs here.
I had a nourouz dance all planned out but the embedded code was removed. If you like to see a wonderful Norouz dance performed in 2007 by Ballet Afsaneh go here. This would have been a performance worthy of the old Persian courts. It is worth watching!