Datta Jayanti is a Hindu festival celebrated as the day of the birth of Lord Datta, that is, the day on which the Datta Principle became active on earth.This festival is celebrated on the full moon day in the Hindu month of Margashirsha.

Datta means one who has attained final liberation.
Datta Jayanti pooja  is a ritualistic worship of Lord Datta similar to the commonly performed ritualistic worship of Lord Vishnu (Satyanarayan).

This is done by following the basic steps of Hindu rituastic worship, namely, cleaning the premises and the altar, cleansing oneself, and preparing the holy food items (prasad), etc.,

After performing the worship and arati of Lord Datta, prasad is distributed to the attendants. Instead of Lord Datta's statue, "Wooden Sabots (Paduka)" and the  "Oudumbar Tree" are used for the ritualistic worship.