: This is another of Herbert
's numerous Arabic
borrowings in Dune. Ramadhan is from Ramadan
, the month in the Hijri
calendar devoted to fasting
and charitable giving. It is the ninth month of this strictly lunar calendar
A lunar year is about 11 days shorter than a solar year, so the month of Ramadan moves backward through the seasons. But that's just Earth; on the Fremen's world there may have been no discrepancy.