We know that Diwali is the biggest festival of our country and many of us celebrate Diwali. In Diwali we decorate the house and light the lamps in the house. We wear new clothes and prepare sweets and many dishes in Diwali festivals.
As a symbol of the victory of virtues over the vices within the human being, they make a woolen divot in a small clay pot and fill it with oil and light it. The five-day festival of Diwali falls between October 13 and November 14 with the rise of the new moon. On the Hindu calendar it is placed on the new moon day at the end of the month of Ashwin and the beginning of the month of Kartaka, beginning on the 13th day of the dark fortnight of the month of Ashwin (28th tithi of Ashwin) and ending on the second day of the light fortnight of the month of Katrak (second tithi of Kartaka). 
There are regional variations in the main days of celebration.[3] In many areas of India and Nepal, this festival celebrates Rama’s arrival after 14 years of exile and his victory over Ravana according to Hindu belief. The word still retains its original form in the languages of the south and east. In Jainism, Diwali symbolizes Nirvana attained by Mahavira on October 15, 527 BC. 
Deepavali means string of lamps (Sanskrit dip = lamp and avali = string, garland). In many modern languages, and especially in North India, it is known by the shortened name of Diwali. Different communities celebrate Kidha to distinguish the number of days. Although the major days in India and Nepal are the same and fall at the same time, they fall in different Gregorian months, depending on the version of the Hindu almanac prevalent in each region.
Diwali is also celebrated to celebrate the return of King Rama of Ayodhya with his wife Sita and brother Lakshmana to Ayodhya 14 years after Ravana’s death in exile and war. It is believed that the people of Ayodhya made ghee lamps to illuminate the dark path. As Rama traveled from South India to his kingdom in North India, he first passed through the South. For this reason, this festival is celebrated a day earlier in South India.
In Hinduism, Diwali has great glory and people celebrate the festival with enthusiasm. Diwali also has five days of public holidays. The festival of Diwali is celebrated with pomp in the memory of Lord Ram.
As a symbol of the victory of virtues over the vices within the human being, they make a woolen divot in a small clay pot and fill it with oil and light it.