Sadgati Vratam is performed on the eighth day during the waxing phase (Shukla Paksha) in a Hindu lunar month and is dedicated to Lord Brahma. The Vrata is broken at night. People perform this Sadgati Vrata for a year is believed to attain material progress similar to Indra – the king of Devas. When Sadgati Vratam is observed on the eight day during the waxing phase of moon in the Poush Month (December – January), it is known as Maha Rudra Vratam.
If Maha Rudra Vratam falls on a Wednesday it is considered even more auspicious.
Other deities that are worshipped on the day include Budha or Mercury.
A devotee observing the Sadgati Vratam usually eats only a little cooked rice on the day of fasting.
The story associated with Sadgati Vratam is listened to or read on the day.