Chaitra Purnima. Hanuman's birthday, on Chaitra's full moon in North India. Hanuman Jayanti (Sanskrit: हनुमानजयंती, romanized: Hanumānajayantī), also called Hanuman Janmotsava, is a Hindu festival celebrating the birth of the Hindu deity Hanuman, one of the protagonists of the Ramayana and its many versions. Hanuman is regarded to be an ardent devotee of Rama, and is widely known for his unflinching devotion. He is revered as a symbol of strength. The celebration of Hanuman Jayanti varies by time and tradition in each state of India. In most northern states of India, the festival is observed on the full-moon day of the Hindu month of Chaitra (Chaitra Purnima). In Telugu states, it is celebrated on Bahula (Shukla Paksha) Dashami in Vaishakha month according to Telugu calendar. In Karnataka, it is observed on Shukla Paksha Trayodashi, during the Margashirsha month or in Vaishakha, while in Kerala and Tamil Nadu, it is celebrated during the month of Dhanu (called Margazhi in Tamil). It s observed on Pana Sankranti in the eastern state of Odisha, which coincides with the Odia New Year. Wiki link Dates computed from the Sun and Moon as New Delhi's panchang reckons them; regional calendars can differ by a day. Text: Wikipedia (CC BY-SA).