6 Jashan Days

Six of these Jashan days are dedicated to the six Ameshaspands (Amesha Spentas). These six days are respectively:
Jashan of Ardavisht, celebrating fire and all other luminaries. 3rd day of the 2nd month (April 22nd)
Jashan of (K)Hordad, celebrating the waters. 6th day of the 3rd month (May 25th) Jashan of Amurdad, celebrating plants. 7th day of the 5th month (July 25th)
Jashan of Shahrevar, celebrating metals and minerals.4th day of the 6th month (August 21st)
Jashan of Bahman, celebrating animal creation. 2nd day of the 11th month (January 16th)
Jashan of Spendarmad, celebrating the earth. 5th day of the 12th month (February 18th) http://en.wikipedia.org/wiki/Zoroastrian_festivals#Gahambars