- Day 1: Dhanteras: This day markes the beginning of the festival of Diwali. It is believed that on this day, Lord Dhanwantari came out of an ocean with Ayurveda for the well-being of humans. Traditionally, people bathe at sunset and lit lamp around Tulsi plant and pray to Lord Yama. People buy gold, jewelry and utensils on this day, as buying is considered auspicious and related to wealth.
- Day 2: Narak Chaturdashi: The second day is also known as Kali Chaudas or simply Choti Diwali. It is also the day when Lord Krishna killed demon Narakasura and freed the world from his fear. Ritual of special bath such as oil bath is practiced in some regions. It is believed that on this day one should not lit diya inside the house.
- Day 3:Deepavali: It is the main day of Diwali when Goddess Lakshmi along with Lord Ganesha is worshipped. People pray the gods to achieve blessings of wealth and prosperity. Houses are decorated and lighted with lamps and candles. People also decorate their homes with Rangoli. There is a belief that Goddess Lakshmi roam on earth on Diwali night; therefore, people light diyas and candles to invite her to their homes. The day also coincides with the day when Pandavas returned from the forest.
- Day 4: Govardhan Puja and Padwa: The fourth day of Diwali is known as Govardhan Puja. According to a mythological tale, Lord Krishna lifted the Govardhan Mountain to save people. In Western states, the festival is celebrated as New Year’s Day as per their calendar. In North, it is also celebrated as Vishkarma Day, when people worship their arms, machinery and instruments.
- Day 5: Bhai Dooj: This day is also known as Yama Dvitiya, which shows the bond of love between a brother and his sister. Sisters send invitation to their brothers to visit their homes.
- The most widely known legend is that of Lord Rama. It is the same day when Lord Rama returned to Ayodhya after completing his exile of 14 years and defeating Ravana.
- It is the day on which Lord Krishna killed the demon Narakasura.
- Mythological legends also say that Diwali is celebrated to observe the marriage of Lakshmi and Lord Vishnu.
- Diwali is also the birthday of Goddess Lakshmi. The Goddess was incarnated on Amavasya (the new moon day) in the month of Kartik. She appeared during the churning of the ocean.
- One of the greatest Hindu kings, Vikramaditya, was also coronated on the day of Diwali.
- People from the Arya Samaj celebrate Diwali because Maharshi Dayananda, founder of the Arya Samaj, attained nirvana on this day.
- Mahavir Tirthankar, founder of Jainism, attained nirvana on Diwali day.
- Sikhs celebrate Diwali because the foundation stone of the Golden Temple was laid down on this day in 1577. Also on this day, the sixth Sikh guru, Guru Hargobind, helped 52 other princes to get release from jail in 1619. The return of Guru Hargobind is celebrated by Sikhs by decorating the Golden Temple with lights. Diwali at Golden Temple, Amritsar, is a must-see because of illumination and fireworks.