Maghi

Sikhs and Hindus, especially in India’s Punjab region, both observe the first day of the month of Magh. In Sikhism, Maghi honors the martyred Chali Mukte (40 Liberated Ones), killed as they resisted an attack on Guru Gobind Singh. The battle took place on 30 Poh (December 29), 1705 in Muktsar, Punjab. The fallen were cremated the next day, 1 Magh, which generally falls on January 14 or 15. Hindus across India and Nepal celebrate the event as a harvest festival, known by Makar Sankranti, Pongal, Uttarayan, and other names.

Maghi customs include recitals of the entire Guru Granth Sahib, bathing in holy water, charitable giving, and eating kheer (sweet rice porridge). The largest celebration takes place over three days in Muktsar. Believers bathe in the Sarovar (sacred pool) and visit shrines associated with the battle. On the third day, they walk together from the main shrine to the Tibbi Sahib gurdwara, sacred to Guru Gobind.

Sourced from https://theguibordcenter.org/faiths/sikhism/sikh-festivals-and-observances/