The 14 diyas are lit from Dhanteras itself.
October 16, 2017 7:32pm CST
For Hindus, Diwali begins with Dhanteras. There was a mythological fact that Prince Hima was supposed to die on 4th day of marriage. His horoscope showed that. His wife on the 4th day kept her gold silver jewellery in front of Goddess Laxmi and Lord Kuber. She sang bhajans and did not allow her husband to sleep that night. Yama in the form of serpent came and could not kill the prince due to the lights put in the house with 14 diyas and the sparkle of jewellery. From that time during this amabasya, Hindus light up their house and put in 14 diyas made of mud and having cotton salita. It looks dazzling.