Golden Temple attempted to reach Amritsar to liberate the Golden Temple. Within six months, on 31 October 1984, Indira Gandhi's Sikh bodyguards assassinated her. In 1986, Indira Gandhi's son and the next Prime Minister of India Rajiv Gandhi ordered repairs of the Akal Takht Sahib. These repairs were removed and Sikhs rebuilt the Akal Takht Sahib in 1999. One of the most important festivals is Vaisakhi, which is celebrated in the second week of April (usually the 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
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,