His birth is celebrated as Guru Nanak Gurpurab on Katak Pooranmashi ('full-moon of Kattak'), i.e.
Gurū Nānak (15 April 1469 – 22 September 1539 Gurmukhi: ਗੁਰੂ ਨਾਨਕ pronunciation:, pronunciation ⓘ), also known as Bābā Nānak ('Father Nānak'), was the founder of Sikhism and is the first of the ten Sikh Gurus.
