NoRuz is the most sacred holiday of those who follow the faith of Zarathustra, observing when Dadvah Ahura Mazda, who the World calls God, created Fire and finished his creation.
Two things I must stress NoRuz is not.
1. Associating NoRuz with the jamshid myth is wrong, as there is next to no proof for the existence of that person.
2. It is NOT an Iranian version of st patricks day which Iranians can use as an excuse to act like assholes.
Additionally, zarif, rajavi, and their associates can take their NoRuz greetings and shove them up their kuni ass.