Overview
The Nishan Sahib is placed outside every Sikh Gurdwara and is supported by a pole of timber or metal.
The Khanda, a Sikh symbol, is rendered in blue on the saffron background. The khanda is placed high up on a flagpole as a sign for all Sikhs and indeed any other people that they can come and pray in this building. Great respect is shown to this flag which is shown by its washing using milk and water every year in April at the festival of Vaisakhi. The Nishan Sahib is changed once the saffron color has faded.
Like a Flag of any institution, this Flag symbolizes the presence of the Khalsa and hence is hoisted at every Gurdwara premises. Therefore, anybody in need of help. However, with the Khalsa now being in non-war status, but always functional the Gurdwaras serve the purpose of congregational meeting, Langar and lodging.
Read more about this topic: Nishan Sahib