Seven Different Reasons Why different parts of India celebrate Diwali?

1 Lord Rama return to Ayodya after spending 14 year and Deafiting Raavana

2 Diwali is celebrated as the day Lakshmi was born from Samudra Manthan and  Lakshmi chose Vishnu as her husband on the night of Diwali.

3 Eastern India elebrates Diwali as Kali Puja  in honour of Godness  Kali who is known to have gone on a destructive rampage to cleanse the earth of all demons.

4 some states of western India, such as Gujarat, the celebration of Diwali implies the beginning of New year.

5 In Jainism , Diwali is celebrated to observe the anniversary of Mahavira’s spirit finally  at last achieving  Nirvana.

 6 Diwali is celebrated as on which the Pandavas return to Hastinapur on the night of Kartik Amavasya.

7 In Sikhism, Diwali is connected with the occasion of Master Hargobind's released  by Mughal head Jehangir.