happy gurpurab, guru nanak jayanti festival of sikh celebration background

akhand amrit belief birthday blessing celebration ceremony culture dev editable founder granth gurdwara gurmukhi gurpurab gurpurb guru happy holiday illustration india indian jayanti kartik legend man nagarkirtan nanak november path pheris poornima prabhat prakash punjab punjabi purnima religion religious sahib saint shahmukhi sikh sikhism spiritual tradition turban utsav vector vela warrior worship