Dhana Trayodasi is the first day of the five-day Diwali Festival as celebrated in India. The festival, known as "Dhanatrayodashi" or "Dhanvantari Trayodashi".The word Dhan means wealth and Teras means 13th day as per Hindu calendar.
Velugula Panduga Viseshalu - http://www.youtube.com/watch?v=3_FMbChut58
TeluguOne wishes you Happy and Safe Diwali