Nag panchami is celebrated on 5th day of bright half of Shravan month (Shrawan Shukla Panchami). In this year 2009, Nag panchami will be celebrated on Sunday 26th of July.
Naga is the word for snake in Sanskrit and this day is called Nagapanchami because snakes are worshiped on this day. According to astrology, Snake god is the lord of 5th day of a Hindu month, so it is considered to be the day meant for snakes. Garud Puran says that statues of snakes should be placed on both sides of the house on this day and Maha-naags like Ananta etc. should be worshiped.
According to Skand Puran’s Nagar Khand, all desires come true if one worships the snakes of Chamatkarpur. Narad Puran says one should observe fast on Kartik Shukla Chaturthi to avoid snakebite. It also suggests later that snakes should also be worshiped on Bhadrapad Krishna Panchami , fast should be observed and all family members should feed milk to snakes.
One time food should be taken on prior date 4th (Chaturthi) and complete fasting should be done on 5th (Panchami). On this day, draw five snakes using turmeric and sandalwood ink with the pen of silver, gold, wood or clay, and worship them with Kheer, Panchamrit, Dhoop, incense sticks, Naivedya and lotus flower etc. After the rituals, feed dishes like Kheer and laddu to Brahmins. One should not dig any surface on the day of Nagapanchami.
To worship snake god, make the snake of a rope and tie seven knots in it. Then place it on a wooden bench. Worship the deity with turmeric, rice and flowers etc. and offer the mixture of milk, ghee and sugar to the holy deity.
Sing hymns after worship and offer the mixture of milk, honey and some sugar to snake by putting it in front of any snake burrow. Take a little soil from there and draw the picture of a snake on the corner walls of home. Listen the story of Nagapanchami at the end.