Dhanteras, also known as Dhantrayodashi, marks the auspicious beginning of the five‑day Diwali festival. Falling on the thirteenth day of the Krishna Paksha in the month of Kartik, this day is dedicated to invoking blessings of wealth, health, and prosperity. On Dhanteras, devotees worship Lord Dhanvantari (the divine physician) and Goddess Lakshmi, and often the