Vaikuntha Ekadasi and Christmas

Vaikunta Ekadashi
From Wikipedia, the free encyclopedia

Vaikuntha Ekadashi  is the 
Shukla paksha Ekadashi that occurs during the
 Dhanurmasa  (sagittarius costellation) 
December ---24 --year 2012
Note that this date coincides with Christmas day

Vaishnavism (Worship of Lord Vishnu) culture believes that ‘Vaikuntha Dwaram’ or ‘the gate to Lord's Inner Sanctum’ is opened on this day. The Margashirsha shukla paksha ekadashi in lunar calendar is known as a 'Mokshada Ekadashi'. Special prayers, yagnas, discourses and speeches are arranged at Vishnu temples across the world on this auspicious day.

Details as per Hindu Blog

Vaikunta Ekadashi is one of the most important Ekadasis. Ekadashi is an auspicious day dedicated to Lord Vishnu and falls on the eleventh day of every lunar fortnight in traditional Hindu calendar. In 2012, the date of Vaikunta Ekadasi is December 24. (Certain calendars have marked Vaikunta Ekadasi on December 23 but this is Smarta Ekadasi) Vaikuntha Ekadasi is observed in the Margali Month (Margazhi Masam) as per Tamil Calendar and in Pushya month as per Telugu Calendar. 
Vaikunta Ekadasi festival is more elaborately celebrated by Vaishnavites. It is more prominent for Tamil and Telugu speaking people. Fasting, keep vigil at night and passing through the Vaikunta Dwaram are the important auspicious activities on the day.