There are 24 Ekadasis observed by Hindus during the year. Of these Vaikunda Ekadasi celebrated in the Tamil month Margazhi (Dec-Jan) is considered very auspicious.
On this day, hundreds of people pay homage to their ancestors. Thai Amavasai is special for Thithi and Tharpanam. This is also the first Amavasi of Utharayanam (the period when Sun moves Northwards).
The 5th day of the bright fortnight of the lunar month of Thai (Magh) is the day of Vasant Panchami. Hindus all over the world celebrate this festival with great enthusiasm.