In what year did the Sikh religion formally begin?

The Sikh religion formally began in 1469, which marks the birth year of Guru Nanak, the founder of Sikhism. Guru Nanak's teachings and spiritual revelations established the foundational philosophy and principles that would become the core of Sikh belief. His early experiences, travels, and teachings provided the groundwork for the Sikh community, which later expanded under the leadership of subsequent Gurus.

The other years mentioned do not align with the established timeline of Sikh history. For example, 1530 is significant for the death of Guru Nanak, but it does not represent the beginning of the religion. The year 1450 falls before Guru Nanak's birth, so it would not accurately reflect the inception of Sikhism. Additionally, 1600 is far too late, given that the first significant Sikh congregations and practices were already well established by that time. Thus, 1469 is recognized as the pivotal year for the formal foundation of the Sikh faith.