The birth anniversary of the first of the ten gurus in Sikhism, Gurpurab is one of the most significant festivals for the Sikhs and is not celebrated on a fixed date. This year, the auspicious occasion of the 552nd birth anniversary of Guru Nanak Dev Ji will fall on 19 November 2021 and will be celebrated globally. According to the lunar calendar, the night of Diwali is the fifteenth day, Amavasya of the month of Kartik, while fifteen days after it is the night of Gurpurab- the night of the full moon, also known as Kartik Purnima. Because the full moon is the brightest night of the month, this day is considered special and signifies illumination and enlightenment – motifs that are integral to the day.