Dhanteras, also known as Dhan Trayodashi, is the first day of Diwali festivities, which is a five-day festival, and it falls on the thirteenth day of the lunar month of Kartik. In 2024, Dhanteras will be celebrated on November 2nd (instead of October 29th). This auspicious day is dedicated to Lord Dhanvantari, the God of Ayurveda and health, and is associated with wealth and prosperity, making it an essential part of the Diwali celebrations.