The 28 Somali lunar stations of the moon are explained from page 47 of Galaals study linked above. He disagrees with Cerulli who claimed the somali and Afar system came from Southern Arabs. I think the Somali would have articulated their astrological philosophy independently and out of necessity due to climate/seasonal movements….but who knows if those possible T Haplogroup group guys and camel herders had some influence on this cultural phenomena……or it might have come from the migration from North East Africa.
The Chinese and Indians have their own version.
I wasn’t unable to find a link to Cerulli work
The Lunar Stations In The Astronomical Ideas Of The Somalis And The Danaki - eHRAF World Cultures
This article contains an analysis and comparison of the beliefs of the Somali and the Danakil concerning astrological lunar stations. The author probes the etymology of both the Somali and the Danakil names for these lunar stations, examines varied popular beliefs about the lunar stations, and...
ehrafworldcultures.yale.edu