Umqondo wamanje wesikhathi wenziwa ngamaSumeriya eminyakeni engu-5,000 XNUMX edlule!
Imiphakathi eminingi yasendulo yayinomqondo wesikhathi, nakuba wawungacacile. Ngokusobala, babazi ukuthi usuku luqala lapho ilanga liphuma kanye nobusuku lapho ilanga linyamalala phezu ...