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).
Bhitari pillar inscription of Skandagupta The Bhitari pillar inscription of Skandagupta, was discovered in Bhitari, Ghazipur, Uttar Pradesh, and dates to the reign of Gupta Empire ruler Skandagupta (c. 455 – c. 467 CE).