Task: Question Answering
Input (English): Context : Operation Neretva '93 was an Army of the Republic of Bosnia and Herzegovina (ARBiH) operation against the Croatian Defence Council (HVO) in September 1993 on a 200 km long front from Gornji Vakuf to south of Mostar, one of its largest of the year, on areas which were included in the Croatian Republic of Herzeg-Bosnia. 
Question : On what date did Operation Neretva '93 take place?
Output (English): September 1993