One of the most sacred ceremonies in Sikhism is Guru Nanak Gurpurab, which commemorates the birth of Guru Nanak, the founder of Sikhism and the first Sikh Guru. Generally, the ceremonies in the Sikh religion are dedicated to the celebration of the birth of the ten Sikh Gurus.
Brief about Sikhism .. a monotheistic religion
Sikhism is a monotheistic religion originated in northern India with around 27 million followers around the world, most of whom live in the Punjab region of India and Pakistan. It was founded by the Guru Nanak, also known as the First Guru in the 16th century.