The first day of Diwali: Dhanteras on 15.10.09
The first day of Diwali is called Dhanvantari Triodasi or Dhanwantari Triodasi also called Dhan Theras. It is in fact the thirteenth lunar day of Krishna Paksh, the dark forthnight of the month of Kartik. On this day, Lord Dhanwantari came out of the ocean with Ayurvedic for mankind. This day marks the beginning of Deepawali celebrations.

On this day at sunset, Hindus should bathe and offer a lighted deeya with Prasad (sweets offered at worship time) to Yama Raj, the Lord of Death and pray for protection from untimely death. This offering should be made near a Tulsi tree, the Holy Basil or any other sacred tree that one might have in their yard.

The second day of Diwali: Choti Diwali on 16.10.09
The second day of Diwali is called Narak Chaturdasi. On this day Lord Krishna destroyed the demon Narakasur and made the world free from fear. On this day, one should massage the body with oil to relieve it of tiredness, bathe and rest so that Diwali can be celebarated with vigour and devotion.

On this night, Yama Deeya should not be lit. The Shastras (Laws of Dharma) declares that Yama Deeya should be offered on Triodasi night with Prasad. Some people mistook it to mean that because Yama Deeya was lit on that night, that it should always be lit on the night before Diwali. This is absolutely not true. It is advisable that one consults with a learned Pandit or Hindu Astrologer for proper guidance on this matter.

The third day of Diwali: Lakshmi Puja on Diwali on 17.10.09
This is the day when worship unto Mother Lakshmi is performed. Hindus cleanse themselves and join with their families and their Pandit (priest) and they worship the divine Goddess Lakshmi to achieve the blessings of wealth and prosperity, the triumph of good over evil and light over darkness.

The fourth day of Diwali: Padwa & Govardhan Puja 18.10.09
On this day, Govardhan Pooja is performed. Many thousands of years ago, Lord Krishna caused the people of Vraja to perform Govardhan Pooja. From then on, every year Hindus worship Govardhan to honour that first Pooja done by the people of Vraja.

The fifth day of Diwali: Bhai Duj on 19.10.09
The fifth day of the Diwali is called Bhratri Dooj. This is the day after Goverdhan Pooja is performed and normally two days after Diwali day. It is a day dedicated to sisters. Many moons ago, in the Vedic era, Yama (Yamraj, the Lord of death) visited his sister Yamuna on this day. He gave his sister a Vardhan (a boon) that whosoever visits her on this day shall be liberated from all sins. They will achieve Moksha or final emancipation. From then on, brothers visit their sisters on this day to enquire of their welfare.

This day marks the end of the five days of Diwali celebrations. This is also known as Bhai fota among Bengalis. Bhai fota is an event especially among Bengalis when the sister prays for her brother's safety, success and well being.s