goodness over evil.
There are few origins (as it often happens India:) of Diwali festival:
1) The blessed day on which the triumphant Lord Rama returned to Ayodhya after defeating Ravana.
2) Marriage of Goddess Lakshmi with Lord Vishnu.
3) In Bengal, the festival is dedicated to the worship of Kali.
4) On this day, Sri Krishna killed the demon Narakasura.
5) In Jainism, Diwali marks the attainment of moksha by Mahavira in 527 BC.
6)In Sikhism, Diwali commemorates the return of Guru Har Gobind Ji to Amritsar after freeing 52 Hindu kings imprisoned in Fort Gwalior by Emperor Jahangir;
7) On this day, Goddess Lakshmi emerged from Kshira Sagar (Ocean of Milk), during Samudra manthan.
During Diwali people pray and wish each other happiness.
Diwali prayer: May the light of these little lamps bring inner light to awaken our inner motive of our own self.
There are many Diyas (oil lamps) filled with oil, which signify the triumph of good over evil, the uplifting of spiritual darkness.
Diwali is celebrated by illumination of homes with lights and the skies with firecrackers. Some say, the sound of fire-crackers are an indication of the joy of the people living on earth, making the gods aware of their happiness. Others say: the fumes produced by the crackers kill a lot of insects and mosquitoes, found in plenty after the rains.
Tradition of gambling on Diwali is also very popular. legend says that on this day, Goddess Parvati played dice with her husband Lord Shiva, and she proclaimed that whosoever gambled on Diwali night would prosper throughout the ensuing year.
Diwali literally means "a row of lights". Diwali lightens up the faces of everyone celebrating Diwali.