Chaharshanbe Suri
The sun was one of the early Gods of the people in old times, praise of the sun have deep root in the old festivals and Suri festival also has relation with the praise of sun and the dead. Sur means red also means sun solar deity and Surya with the same root of the Sul. As Herodotus explained Ertaeyan(Iranian) were worshiping the sun. the importance of fire can be felt while we look at the stone inscriptions of Achaemenid kings also the very first mantra of Rig Veda is in the praise of Fire. Chaharshanbe Suri and Holi festival had the same roots in ancient Arian religions.