Significance
The festival of Diwali is the most important festival for Hindus. But, the festival is celebrated even by Sikhs, Jains and Buddhists. It has different reasons of significance for all these communities
In HinduismThe festival is associated with home-coming of Lord Rama, in honor of whom the kingdom of Ayodhya was all lit up with oil lamps and earthen pots. The festival marks the victory of good over evil and numerous rituals are observed to celebrate this auspicious day.
In JainismDiwali marks the attainment of Nirvana by Lord Mahavira.
In Sikhism The festival of Diwali is significant in accordance with the illumination of the city of Amritsar, on the homecoming of Guru Har Gobind ji. Guru Har Gobind ji, along with many Hindu gurus were imprisoned by Emperor Jahangir.
After he got free from the prison, he went to the golden temple in

Amritsar. The entire city of Amritsar was lit with lamps on that day and is celebrated on Diwali.
The festival of Diwali is also celebrated by some sections of Buddhists.
Deepavali festival Video