Hanuman Jayanti is observed on Pana Sankranti in the eastern state of Odisha, which coincides with the Odia New Year.

In Venkatachala Mahatyam and Skanda Puranam, it was explained that Anjana Devi, mother of Hanuman, approached sage Matanga seeking a way for her to be blessed with a son.

To pacify her, the gods descended on Venkatachalam and bestowed several boons on Hanuman and said the place would be called Anjanadri Hill.

[15] The Valmiki Ramayana states that his father, Kesari, was the son of Brihaspati, the king of a region named Sumeru, located near the kingdom of Kishkindha near Hampi in present-day Vijayanagara district of Karnataka.

[18] Eknath's Bhavartha Ramayana states that when Anjana was worshiping Rudra, King Dasharatha of Ayodhya was also performing the ritual of Putrakameshti under the guidance of Sage R̥śyaśr̥ṅga in order to have children.

As a result, he received some payasam (Indian pudding) to be shared by his three wives, leading to the births of Rama, Lakshmana, Bharata, and Shatrughna.

By divine ordinance, a kite (bird) snatched a fragment of that pudding and dropped it while flying over the forest where Anjana was engaged in worship.

[20] In Tamil Nadu and Kerala, Hanuman Jayanti is celebrated on the new moon day in Margali (Dhanu) month.

Famous Hanuman temples in these states like Nanganallur, Namakkal, Suchindram, Thrikkaviyoor and Alathiyoor celebrate this day with pomp.

[21] In Maharashtra, Hanuman Jayanti is celebrated on the full moon day (pūrnima) of the Hindu lunar month of Chaitra.