The Ethiopian calendar months have different durations than those in the Gregorian calendar. For example, the Ethiopian month of Meskeram has 30 days but corresponds to September in the Gregorian calendar, which has either 30 or 31 days depending on the year. Additionally, the last month of the Ethiopian calendar, Pagume, ranges from 5 to 6 days but corresponds to September in the Gregorian calendar, which ranges from 6 to 11 days. The document outlines how each Ethiopian calendar month's duration differs from its Gregorian equivalent.

1. Ethiopian Calendar months are different from Gregorian calendar months:
 30 days of Meskeram is different from 30 days of September
 30 days of Tikimt is different from 31 days of October,
 30 days of Hidar is different from 30 days of November,
 30 days of Tahisas is different from 31 days of December,
 30 days of Tir is different from 31 days of January,
 30 days of Yekatit is different from 28 or 29 days of February,
 30 days of Megabit is different from 31 days of March,
 30 days of Miyazia is different from 30 days of April,
 30 days of Ginbot is different from 30 days of May,
 30 days of Megabit is different from 31 days of March,
 30 days of Miyazia is different from 30 days of April,
 30 days of Ginbot is different from 30 days of May,
 30 days of Sene is different from 30 days of June,
 30 days of Hamle is different from 31 days of July,
 30 days of Nehase is different from 31 days of August,
 5 or 6 days of Pagume is different from 6 to 10 or 11 of September.
by g9h8i7
Meskeram that has a period of 30 days is the first month of Tropical calendar of
Ethiopia.Whereas, September that has a period of 30 days is the 9th month of temperate calendar
of Gregorian.
When Meskeram is 1,September is 12 in category one and 11 in categories two and three.When
September is 30, Meskeram is 19 and 20 in the first and others categories
respectively.Moreover,when Meskeram is 30, October is 11 or 10.
Thus the intersection of Meskeram and September is 19 and 20 days in category one and others
categories respectively.