Gemini/Mercury Duad Degree:   2½-5° Gemini Administrative Division:  Luxembourg  is divided into 3  districts  (Diekirch,  Grevenmacher ,  Luxembourg ), which are further divided into 12  cantons  and then 116  communes . Twelve of the communes have  city status , of which the city of  Luxembourg  is the largest. D3-4-1  Grevenmacher ,