ጊዜ ፣ የኢትዮጵያውያን የዘመን አቆጣጠር ቀመር እና የዘመናዊ ሥነፈለክ መንደርደሪያዎች

Calendar is one of the pillars of human civilization. In his pursuit of designing a system of measuring and keeping time, man raised his head to the heavens. He observed the movement of the heavenly bodies and tried to decipher the laws that govern them. His continuous efforts and book keeping allow... View More