Important anniversaries associated with the lives of the Gurus are referred to as Gurpurbs. These are usually marked at gurdwaras with Akand Path (continuos cover to cover reading of Sri Guru Granth Sahib) concluding on the specific day. There is also kirtan (musical recitation of hymns from Sri Guru Granth Sahib) as well as katha (lectures on Sikhism). Some places also have nagar kirtan, where there is a procession with Sri Guru Granth Sahib led by 5 Sikhs carrying Nishan Sahibs (the Sikh flag). Free sweets and langar are also offered to the general public outside some gurdwaras.
Among the larger Gurpurb celebrations are:
First installation of Sri Guru Granth Sahib in the Golden Temple by Guru Arjan Dev
Birth of Guru Nanak (traditionally celebrated in November)
Birth of Guru Gobind Singh
Martyrdom of Guru Arjan Dev
Martyrdom of Guru Tegh Bahadur
Martyrdom of The Sahibzadas (the sons of Guru Gobind Singh)