The Installation of Granth Sahib Ji commemorates when the Granth Sahib Ji became the eternal Guru and supreme spiritual authority of Sikhism. This day marks the moment when the line of human Gurus came to an end and spiritual guidance was entrusted to the sacred scripture, which is revered as the living Guru. Many Sikhs celebrate by gathering at gurdwaras for prayer services, devotional singing (kirtan), readings from the Guru Granth Sahib Ji, and community meals.