At the age of 72, on the dawn of Amavasya, the 30th day of Ashwin in the year 471, before the Vikram era (527 B.C.), Bhagwan Mahavir Swami, 24th Jain Tirthankara left his human body and attained Nirvana at Pawapuri, Bihar, India. It was a very dark night without the light of the gods or the moon. To this day, this occasion is celebrated as Diwali, the festival of lights, symbolizing the perpetuation and universalization of his truth-revealing and soul-illuminating light of knowledge, in his physical absence.
Since that time Jains have celebrated the festival of Diwali the last day of Jain calendar, to commemorate the attainment of Moksha by Bhagwan Mahavir Swami.
Let's celebrate together and spread peace in the world.