One of the most imporatant festival is Vaisakhi ( Harvest fesival in Punjab region also marks beginning of new solar year and new harverts season), Which is celebrated in the second week of April (usually on 13th) Sikhs celebrate the founding of the Khalsa on this day and it is celebrated with fervour in the Harmandir Sahib. Other Important Sikh religious days such as the martyrdom day of Guru Teg Bahadur ji, The birthday of Guru Nanak Ji, etc. are also celebrated with religious piety. Similarly Diwali is one of the fesivals which sees the Harmandir Sahib beautifully illuminated with divas/candles(lamps); lights and fireworks are discharged. During these special occasions many thousands of people visit the Holy shrine named Harmandir Sahib.