"A Week-long Adventure Connected by Stars and History"　星と歴史がつなぐ1週間の冒険

This audio explores the origins and impact of the seven-day week, a fundamental structure of modern society. It traces its roots to ancient Babylonian astronomy, its spread via the Silk Road, and its cultural influence today—shaping our sense of weekends and emotions tied to each day. The discussion also touches on its connection to human biological rhythms and questions the future of this system. More than a historical analysis, it examines how the week shapes our perception of time and society, inviting us to rethink its role in the modern world.