Hanuman Jayanti, which falls on the full moon day (Purnima) of the Hindu lunar month of Chaitra, is celebrated to commemorate the birth of Lord Hanumanji who is commonly depicted in the form of Vanara in the Ramayana. It is believed that he was born from the boon of Vayu, the wind deity and is the son of Anjana and Kesari. He is also known as the “obstacle remover”. Hanumanji is the only deity who has full control over the planet Shani (Saturn). Hence, Hindus offer him oil and leaves on Saturday so that he would protect them from bad effects of Planet Saturn (Shani) (According to Indian astrology, the problems in one’s life are caused by Planet Saturn).
Lord Hanuman is a shape-shifter with magical powers that allow him to take many forms, move mountains and control the clouds. Even more than his magical power is His devotion to Lord Rama. Lord Rama gave this blessing to him when he rejected to accept any rewards after defeating Ravana. Many people all around the world will fast in honor of Hanumanji and give special offerings to him especially on this auspicious day. In times of trouble, it is a common faith among Hindus to chant the name of Hanumanji or sing his hymn – “Hanuman Chalisa“.