The simple question "How did the Maya come up with a calendar that had only 260 days?" led Vincent Malmström to discover an unexpected "hearth" of Mesoamerican culture. In this boldly revisionist book, he sets forth his challenging, new view of the origin and diffusion of Mesoamerican calendrical systems—the intellectual achievement that gave rise to Mesoamerican civilization and culture.

Malmström posits that the 260-day calendar marked the interval between passages of the sun at its zenith over Izapa, an ancient ceremonial center in the Soconusco region of Mexico's Pacific coastal plain. He goes on to show how the calendar developed by the Zoque people of the region in the fourteenth century B.C. gradually diffused through Mesoamerica into the so-called "Olmec metropolitan area" of the Gulf coast and beyond to the Maya in the east and to the plateau of Mexico in the west.

These findings challenge our previous understanding of the origin and diffusion of Mesoamerican civilization. Sure to provoke lively debate in many quarters, this book will be important reading for all students of ancient Mesoamerica—anthropologists, archaeologists, archaeoastronomers, geographers, and the growing public fascinated by all things Maya.

Winner of the Runciman Award
Winner of the Charles J. Goodwin Award

“Tells the story of how the Seleucid Empire revolutionized chronology by picking a Year One and counting from there, rather than starting a new count, as other states did, each time a new monarch was crowned…Fascinating.”
—Harper’s

In the aftermath of Alexander the Great’s conquests, his successors, the Seleucid kings, ruled a vast territory stretching from Central Asia and Anatolia to the Persian Gulf. In 305 BCE, in a radical move to impose unity and regulate behavior, Seleucus I introduced a linear conception of time. Time would no longer restart with each new monarch. Instead, progressively numbered years—continuous and irreversible—became the de facto measure of historical duration. This new temporality, propagated throughout the empire and identical to the system we use today, changed how people did business, recorded events, and oriented themselves to the larger world.

Some rebellious subjects, eager to resurrect their pre-Hellenic past, rejected this new approach and created apocalyptic time frames, predicting the total end of history. In this magisterial work, Paul Kosmin shows how the Seleucid Empire’s invention of a new kind of time—and the rebellions against this worldview—had far reaching political and religious consequences, transforming the way we organize our thoughts about the past, present, and future.

“Without Paul Kosmin’s meticulous investigation of what Seleucus achieved in creating his calendar without end we would never have been able to comprehend the traces of it that appear in late antiquity…A magisterial contribution to this hitherto obscure but clearly important restructuring of time in the ancient Mediterranean world.”
—G. W. Bowersock, New York Review of Books

“With erudition, theoretical sophistication, and meticulous discussion of the sources, Paul Kosmin sheds new light on the meaning of time, memory, and identity in a multicultural setting.”
—Angelos Chaniotis, author of Age of Conquests