"Long after the monsoons cease in the plains of northern India and half the lunar year is over, there comes the widely-celebrated festival of Diwali, held on the day of the new moon in the month of Kattak. The raison d’étre of this festival of lights is so well known that it needs no explication.*” What may be recounted is how the festival crystallized into ‘the greatest festival of the Sikhs’.88 According to Sikh tradition the sixth guru, Hargobind Singh, on his release from Gwalior fort by the Mughal authorities, arrived in the city of Amritsar accompanied by fifty-two chieftains. The residents of the city were greatly elated and since then have celebrated the day of the festival with jubilation."
January 1, 1970
https://en.wikiquote.org/wiki/Sikh_holidays_and_festivals