Lohri is a traditional Punjabi festival of pure secular nature. It is celebrated by Hindus, Sikhs, Muslims, and Christians.
January 13th every year is the marked date for the festival in both India and Pakistan’s Punjab regions, and all over the world where Punjabis are settled.
They say it is a celebration to mark the end of harsh winters of the region. But there is folklore linked to the popular Lohri song Dulla Bhatti Wala Ho….
Dulla Bhatti was regarded as a hero in Punjab, for rescuing Hindu girls from being forcibly taken to be sold in the slave market of the Middle East. Amongst those he saved were two girls Sundri and Mundri, who gradually became a theme of the Punjab folklore.” -Source Wikipedia.