Baba Deep Singh the pool." On hearing the talk of the Sikh, he held his head with his left hand and removing the enemies from his way with the strokes of his 15 kg Khanda "with his right hand, reached the periphery of Harmandir Sahib where he breathed his last. The Singhs celebrated the Bandhi-Sor Divas of 1757 A.D. in Harmandir Sahib". The Sikhs recovered their prestige by defeating the Afghan army and the latter were forced to flee. The spot where Baba Deep Singh's head fell is marked in the Golden Temple complex, and Sikhs from around the world pay their respects
Nishan Sahib Sahib can be seen from far away, signifying the presence of Khalsa in the neighbourhood. It is taken down every Baisakhi (harvest festival, mid-April in the Gregorian calendar), and replaced with a fresh flag, and the flagpole refurbished. During the times of Guru Amar Das the Nishan Sahib was white, to represent peace and simplicity. During the time of Guru Hargobind, however the Nishan Sahib changed into a shade of yellow, known as Basanti. After the creation of Khalsa, Guru Gobind Singh introduced blue flag, which is still the colour of the Nihang flags. The first Sikh flags were plain,