Adi Shankaracharya Jayanti is observed on the 5th day during waxing of moon in the month of Vaisakha (April – May). It is the birth anniversary day of Adi Shankara. In 2021, the date of Adi Shankaracharya Jayanti is May 17. Scholars differ regarding the period in which Adi Shankara lived but his birthday is celebrated annually on the same day – on the 5th day of the Shukla Paksha (waxing phase of moon) of Vaisakha.Adi Shankaracharya, who brought out Sanatana Dharma, from the clutches of rituals, is also considered as an incarnation of Lord Shiva by many people. It was Shankaracharya who had revived the teachings of Upanishads.