What century did Shulgi reign for 48 years?
Babylonian calendar The Babylonian calendar was a lunisolar calendar with years consisting of 12 lunar months, each beginning when a new crescent moon was first sighted low on the western horizon at sunset, plus an intercalary month inserted as needed by decree. The calendar is based on a Sumerian (Ur III) predecessor preserved in the Umma calendar of Shulgi (c. 21st century BC).
Huai of Xia Huai (; read Hui according to Sima Zhen) was the eighth king of the semi-legendary Xia dynasty of ancient China, who possibly ruled 44 years. His other name is Fen (芬).