Baisakhi

               Basiakhi is the harvest thanksgiving festival and is celebrated on a fixed date according to the Solar calendar, on the 13th day of April. In Punjab this festival is celebrated with great fanfare. It is one of the main festival of Sikhs.
Legend:
               It is said that after Guru Nanakdev founded the Sikh religion, there were nine more gurus. The last guru, Guru Gobind Singh laid the foundation of the Khals a Panth or the path of the pure on the Baisakhi day. He wanted the Sikh to be valiant, during, and protective of the religion and of peace. He called his followers to assemble at the Gurudwara and asked them to give a test of fearlessness. The guru asked one of the daring disciples to go with him in the tent. He then came out with a blood-soaked sword. In the same way, he took four more disciples inside the tent who remained undaunted by his act, and when all returned safe and sound, he declared then his Panch prayas, meaning five favourites.
Then he asked his followers to maintain certain principles to become a pure Sikh.
They were to keep Kesh (hair), Kenra (iron bangle), Kachchha (underwear), Kangha (comb) and a Kirpan (small dagger) always with them.
These are popularly known as five K's of Sikhism. On this auspicious day, the Guru Granth Sahib was declared as the eternal guru of the Sikhs, and all followers of Sikhism were to revere it celebrations.

Baisakhi

Also See:
Celebrations of Baisakhi