'Mahavir Jayanti' is celebrated as the birth of Lord Mahavira, the last Tirthankara. It falls in the month of March or April according to Gregorian calendar.
Mahavira was born into royalty as the son of King Siddhartha and Queen Trisala. He was born on the thirteenth day of the rising moon of Chaitra month of Hindu Calender.
On this auspicious day grand chariot processions with the images of Mahavira are taken out. Many Jains engage in some sort of charitable act in the name of Mahavira. Donations are collected in order to promote charitable missions. People come to pay their respects and join in the celebrations in Jain temples across the whole India.