Hanuman Jayanti or Hanumath Jayanti is celebrated to commemorate the birth of Hanuman, the Vanara god, widely venerated throughout India.
It is celebrated on the 15th day of the Shukla Paksha, during the month of Chaitra (the Chaitra Pournimaa).
A special feature of Hanuman Jayanti is that according to some religious almanacs (panchangs) the birthday of Shri Hanuman falls on the fourteenth day (chaturdashi) in the dark fortnight of the month of Ashvin while according to others it falls on the full moon day in the bright fortnight of Chaitra.