Because the lunar month consists of 28 days plus one or two days, there are at least 28 visible lunation over four weeks.
1. Xagaa (summer) is marked by Naaf group: Naaf Cadde (white naaf), Naaf Madobe (black naaf), Afqoys, Kuxdin Hore, Kuxdin Dambe, Dirir-day (semi-dirir), and Dirir.