gokt nO&      is one of a number words called utterance-final particles that occur at the end of sentences.   Particles may be question words like bO&O  [=D         gokt  nO&         indicates that the speaker expects an affirmative answer.         

'One o'clock' is mo#oG ny&G 3,'Vbj'      not ny&G mo&oG Vbj'3,'.          All other numbers precede mo#oG 3,'.     1.30 is mo#oG khA&G 3,'g7uj'         with ny&G Vbj'               dropping out. khA&G   by itself   means "1/2."

  '11' is si#p-e#t ly[gvaf       not si#p-ny^G.