Ginbot and May are unlike months.

Today is Kidamelt 10 Ginbot 2005 in the Tropics, when Saturday 18 May 2013 is in the Temperates. The name Ginbot is different from the name May. Ginbot is a subset of Ethiopian calendar that has 30 days and it is the 9th month of the year. But May is a subset of Gregorian calendar that has 31 days and it is the 5th month of the year. Ginbot reveals 30 faster rotations of the Tropics, when May reveals 31 slower rotations of the Temperates. Ginbot and May do not overlap. Therefore, Ginbot and May are different months, because each month has different beginning and ending days. This means that Ginbot is 1, when May is 9 and Ginbot is 30, when June is 7, and May is 31, when Ginbot is 23 in all categories. Therefore, only the first 23 days of Ginbot overlaps with the last 23 days of May. Fig.9. shows the intersection of Ginbot and May is 23 days. n(G)=30 n(M)=31, n(GnM)=n(MnG)=23 , n(M’)=7, n(G’)=8. Finally it is useful to know that Ginbot and May are different months according to which each month recurs during different seasons. Thus the month Ginbot recurs during two seasons of the north and south Tropics, when May does during two seasons of the north and south of Temperates. Therefore; 30 of Ginbot recur during Tsedey of north and Metsew of south Tropics respectively. When 31 days of May recur during Spring of north and Autumn of south Temperates respectively.