Guru Nanak (1469–1539) was the founder of Sikhism and the first of the ten Sikh Gurus. His birth is celebrated worldwide as Guru Nanak Gurpurab on Kartik Pooranmashi, the full-moon day in the month of Katak, October–November.

Guru Nanak is one of the most well-known and revered figures in the history of Sikhism. He is the central character and the most important person in the novel, Gurbani. He is the founder of Sikhism and the first of the ten Sikh Gurus. He lived in the time of the 14th century in India. He was the leader of a group of people called Sikhs. He was a leader, a guru, and a spiritual teacher. His teachings were based on the principles of equality, love, and compassion. His philosophy of life, known as Gurbani, was based on the concept of life, death, and rebirth. He believed that God was present in every part of creation and in every living thing. He taught that God was a part of man, just as man was a part of the whole universe. He also taught that man could be God and God could be man.