Gurū Nānak (Punjabi pronunciation: [gʊɾuː naːnəkᵊ], pronunciation; born as Nānak on 15 April 1469 – 22 September 1539), also referred to as Bābā Nānak ('father Nānak'), was the founder of Sikhism and is the first of the ten Sikh Gurus. His birth is celebrated worldwide as Guru Nanak Gurpurab on Katak Pooranmashi ('full-moon of Kattak'), i.e. October–November.
