happy gurpurab, guru nanak jayanti festival of sikh celebration background

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