>> today is a gurupurab, one of the most auspicious days of the sikh calendar. pilgrims from all over the world come to worship, walk the perimeter and bathe in the holy pool. all are welcome of any faith or caste to remove their shoes, wash their feet, cover their heads and take part in a simple meal. ♪ this is the langar a free vegetarian meal served to many thousands of visitors from every walk of life every day of the