Of all EkAdasis , The one connected with Dhanur Maasa Sukla Paksha EkAdasi is the most exalted and is known as
Sri Vaikunta EkAdasi.
Vaikunta Ekadasi is an important festival dedicated to Lord Vishnu in the Tamil month of Margazhi (December-January). Vaikunda Ekadesi festival is of great significance at the Tirupati Balaji Temple, Srirangam Sri Ranganatha Temple and at the Bhadrachalam Temple. In Kerala, it is known as Swarga Vathil Ekadashi.
The significance of Vaikunta Ekadasi can be traced back to the Padma Purana. The Purana indicates that Lord Vishnu took the form of 'Ekadasi' - female energy - to kill demon Muran. This happened during the month of Margazhi. Impressed by 'Ekadasi,' Lord Vishnu told her that whoever worships him on this day will reach 'Vaikunta' (heaven).
Like all Ekadasi days, devotees fast on this day and observe vigil the whole night. Some people indulge in meditation, Japa and singing of Hari Kirtan. Rice is avoided during ekadashi days as it is believed that the demon Mura finds a dwelling in the rice eaten on Ekadasi day.
It is widely believed that the gates to the heaven open - the Gate of Vaikuntha - on the Vaikunta Ekadasi day. It is one of the most auspicious days in Lord Vishnu Temples in South India.
The 'Vaikunta Dwaram' or 'the gate to the heaven' is opened on this day. This is the passage encircling the innermost sanctum of the Lord. Scores of devotees queue up to pass through the Gate of Vaikunta in the temples.
Vaikunta Ekadashi, or Mukkoti Ekadasi, is the most important of the twenty four Ekadashi observances in South India. Fasting and all night prayer dedicated to Lord Vishnu is the main observance of the day. It is believed that venerating Lord Vishnu on Vaikunda Ekadasi will help to free soul from cycles of rebirth and grant moksha. Another important belief is that Vaikunta Dwara, the doors of heaven, will open on this day and give easy access to Lord Vishnu.
Those visiting Vishnu Temples like Tirupati or Srirangam on Vaikunta Ekadashi can pass through the Vaikunta Dwara, the door through the inner most sanctum sanctorum. In South India, Vaikunta Ekadashi is also known as Mokshada Ekadasi. In 2009, Vaikunta Ekadasi is on December 28.
How to observe Vaikunta Ekadasi?
Vaikunta Ekadashi falls on the eleventh day in Margazhi Shukla Paksha in Tamil Calendar and in Telugu Calendar the same period is Pushya Shukla Paksha.
Things needed for Puja and Prayer
A picture or photo or idol of Lord Vishnu
Fruits
Tulsi leaves
Betel leaves (optional)
Betel nuts (optional)
Yellow bananas
Unbroken coconut (optional)
Observance
Wake up early in the morning. Take bath and offer prayers.
You can perform a simple puja to Lord Vishnu at home by offering fruits and Tulsi leaves.
You can just light the lamp and prayer or meditate for few minutes - or the normal ritual you do daily. Only difference is that today it is dedicated to Lord Vishnu.
If there is a Vishnu temple nearby visit the temple and witness morning pujas and rituals.
Complete fast or upavasam on the day is the main observance.
Fasting
Fasting for 24 hours. It is believed that a partial or total abstinence from food on Ekadasi is rewarded with bliss.
If you have any health problem or are taking medicines, please consult your doctor before deciding on fasting. You can also opt for a partial fast by avoiding food made of rice.
Do not eat food made from rice on Ekadashi.
Evening Prayers
Take a bath in the evening.
Repeat the morning puja to Vishnu
Visit Vishnu temple and witness the evening puja and rituals.
Prayers for Vaikunta Ekadasi
Vishnu Ashotharam
Vishnu Sahasranamam
Or Simple Chanting of - Om Namo Narayana
No Sleep
Staunch devotees who observe Vaikunta Ekadasi fasting do not sleep on the day. They spend the whole night at Vishnu temples or by singing prayers or listening stories dedicated to Lord Vishnu.
Next Day Morning
The fast is broken on the next day (Dwadashi) after taking bath. Offer prayers to Lord Vishnu by lighting a lamp and then you can break the fast.