
Nabonassar Era Begins
Babylon marks a new chapter in timekeeping
According to the astronomer Ptolemy, the reign of Babylonian king Nabonassar began on this day, marking the start of a new era in chronology. Nabonassar's reign became a reference point for ancient astronomers and historians, anchoring the vast sweep of Mesopotamian history to a fixed date. The era of Nabonassar connected Babylonian, Greek, and later Islamic astronomical traditions in a chain of knowledge that spanned millennia.
