"Gita Jayanti" is the birthday of Bhagvad-Gita, the sacred text of the Hindus. It is celebrated on the 11th day of the waxing moon of Margaseersha month (December- January) in the Vedic almanac.
It is believed the immortal "Bhagavad Gita" was revealed to Arjuna by Sri Krishna himself in the battlefield of Kurukshetra (in present day Haryana, India) a little over 5000 years ago.
Lord Krishna rendered his philosophical teachings to prince Arjuna on the first day of the 18-day battle of Kurukshetra. When prince Arjuna refused to fight against his cousins, the Kauravas in the battle, Lord Krishna expounded the truth of life and the philosophy of Karma and Dharma to him, thereby giving birth to one of the world's greatest scriptures, the Gita.
Gita Jayanti is celebrated worldwide by all Hindus (followers of Sanatana Dharma), who revere Bhagavad Gita as their Divine Mother because She teaches us) how to re-establish our lost relationship with God Almighty (The Supreme), our Divine Father.
The Bhagavad Gita is considered the most important and influential Hindu scripture for its philosophical, practical, political, psychological and spiritual value.