Guru Nanak (; ,
Urdu: ,
Guru Nanak) (15 April 1469 – 22 September 1539) was the founder Prophet of
Sikhism and the first of the ten
Sikh Gurus. His birth is celebrated world-wide as
Guru Nanak Gurpurab on Kartik Pooranmashi, the full-moon day in the month of
Katak, October–November.