Hanuman Janmam-Utsav or Hanuman Janam-Utsav is a Hindu religious festival that celebrates the birth of Lord Sri Hanuman, who is immensely venerated throughout India and Nepal. This festival is celebrated on different days in different parts of India. In most states of India, the festival is observed either in the month of Chaitra (usually on the day of Chaitra Pournimaa) or in the month of Vaishakha, while in a few states like Kerala and Tamil Nadu, it is celebrated in the Hindu month of Dhanu (called Margazhi in Tamil)
On this auspicious day, devotees of Lord Hanuman celebrate him and seek his protection and blessings. They flock to temples to worship him and present religious offerings. In return, The devotees receive prasad by the temple priests in the form of sweets, flowers, coconuts, tilak, sacred ash (udi) and ganga jal (holy water). People also celebrate him on this day by reciting various devotional hyms and prayers like the Hanuman Chalisa and reading holy scriptures like the Ramayana and Mahabharata.
Hanuman Janam-Utsav is an important festival of the Hindus. Lord Hanuman is an ardent devotee of Lord Sri Rama and is widely known for his unflinching devotion to Sri Rama. Hanuman is the symbol of strength and energy. He is said to be able to assume any form at will, wield the gada (including many celestial weapons), move mountains, dart through the air, seize the clouds and equally rival Garuda in swiftness of flight.
Lord Hanuman is worshipped as a deity with the ability to attain victory against evil and provide protection.
Lord Hanuman was born on the Anjaneri mountain. His mother Anjana was an apsara who was born on earth due to a curse. She was redeemed from this curse on giving birth to a son. The Valmiki Ramayana states that his father Kesari was the son of Brihaspati, he was the King of a place named Sumeru. Anjana performed intense prayers lasting 12 long years to Shiva to get a child. Pleased with their devotion, Shiva granted them the son they sought. Hanuman, in another interpretation, is the incarnation or reflection of Shiva himself.
Hanuman is often called the son of the deity Vayu (Wind God); several different traditions account for the Vayu's role in Hanuman's birth. One story mentioned in Eknath's Bhavartha Ramayana (16th century CE) states that when Anjana was worshiping Shiva, the King Dasharatha of Ayodhya was also performing the ritual of Putrakama yagna in order to have children. As a result, he received some sacred pudding (payasam) to be shared by his three wives, leading to the births of Rama, Lakshmana, Bharata, and Shatrughna. By divine ordinance, a kite snatched a fragment of that pudding and dropped it while flying over the forest where Anjana was engaged in worship. Vayu, the Hindu deity of the wind, delivered the falling pudding to the outstretched hands of Anjana, who consumed it. Hanuman was born to her as a result. Another tradition says that Anjana and her husband Kesari prayed Shiva for a child. By Shiva's direction, Vayu transferred his male energy to Anjana's womb. Accordingly, Hanuman is identified as the son of the Vayu
Another story of Hanuman's origins is derived from the Vishnu Purana and Naradeya Purana. Narada, infatuated with a princess, went to his lord Vishnu, to make him look like Vishnu, so that the princess would garland him at swayamvara (husband-choosing ceremony). He asked for hari mukh (Hari is another name of Vishnu, and mukh means face). Vishnu instead bestowed him with the face of a vanara. Unaware of this, Narada went to the princess, who burst into laughter at the sight of his ape-like face before all the king's court. Narada, unable to bear the humiliation, cursed Vishnu, that Vishnu would one day be dependent upon a vanara. Vishnu replied that what he had done was for Narada's own good, as he would have undermined his own powers if he were to enter matrimony. Vishnu also noted that Hari has the dual Sanskrit meaning of vanara. Upon hearing this, Narada repented for cursing Vishnu. But Vishnu told him not to repent as the curse would act as a boon, for it would lead to the birth of Hanuman, an avatar of Shiva, without whose help Rama (Vishnu's avatar) could not kill Ravana.
The devotees visit temples and apply tilaka of sindoor to their foreheads from Hanuman's idol. As per legend, When Lord Hanuman found Sri Sita applying sindhur to her forehead, He questioned her and she replied that doing so would ensure a long life for her husband, Lord Sri Rama. Lord Hanuman then proceeded to smear his entire body with sindhur, thus ensuring Lord Sri Rama's immortality.
In South India, especially Tamil Nadu Hanuman Jayanthi is celebrated on the Margazhi month of Moola nakshathram. It is said that Lord Hanuman was born during that month.
In Telangana and Andhra Pradesh, Hanuman Jayanthi is celebrated by Diksha of 41 days beginning on Chaitra Purnima and concluding it on the tenth day during Krishna Paksha in the month of Vaishaka.
In Maharashtra, Hanuman Jayanti is celebrated on the full moon day (purnima) of the Hindu lunar month of Chaitra. A special feature of Hanuman Jayanti is that according to some religious almanacs (panchangs) the birthday of 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. On this day in a Hanuman temple, spiritual discourses begin at dawn since Lord Hanuman was born at sunrise. During the time frame of birth, the spiritual discourse are halted and the offering of food (Prasad) is distributed to everyone.
Spiritual discourses are organised in most of the Hindu temples on this day. Lord Hanuman is considered as the most powerful being in all the loka's (realms).