Supaudana Vrat (Supoudan Vrata, Supodan Shiva Puja, Supodan Varna Sashti) is observed on Shukla Paksha Sashti in Shravan month. In 2012, Supaudana Vrata date is July 24. The vratha is observed on the next day of Nag Panchami. Supodan Vrata is dedicated to worship Lord Shiva.
During the Supoudan Puja, Lord Shiva puja is performed with Shodashopachars (16 types of pujas and rituals) and Ashtottharas. After the puja is done, pulses and rice are offered to Lord Shiva. On this day, the performers of the Vrata take pulses and rice as their food. They avoid eating other food items. The observance of Supoudan Shiva pooja provides health and wealth to the performers of Vratham.