Extensive records on the celebration of Nowruz appear following the accession of Ardashir I, the founder of the Sasanian Empire (224–651 CE). Under the Sassanid emperors, Nowruz was celebrated as the most important day of the year. Most royal traditions of Nowruz, such as royal audiences with the public, cash gifts, and the pardoning of prisoners, were established during the Sassanid era and persisted