Who decided what time it is—and why does the whole world follow the same system?For centuries, towns and cities kept their own time, guided by the position of the Sun. Noon in one place was not necessarily noon somewhere else, and there was little reason for distant clocks to agree. Then railways, telegraphs and international commerce transformed the way people travelled, communicated and organised their lives.The Time Zone World explores the remarkable history of how humanity learned to coordinate its clocks. From Britain's early railway timetables and North America's great clock change of 1883 to the selection of Greenwich as the world's prime meridian, Marcus Ellery reveals how a seemingly simple measurement became an essential part of modern civilisation.Discover why time-zone boundaries bend around countries, how the International Date Line separates one calendar day from another, why governments introduced daylight saving and how wars influenced the hours people lived by. The story continues into the atomic age, revealing the extraordinary precision behind aviation, financial markets, satellite navigation and the digital devices we use every day.Combining history, geography, science and politics, this accessible account shows that time zones are much more than lines on a map. They are the result of centuries of invention, negotiation and cooperation.The clocks may disagree about the hour, but the world has learned how to keep time together.Disclaimer: This book is an independent work of historical nonfiction. References to organisations, institutions, products and trademarks are included for identification and historical discussion only. No affiliation, sponsorship or endorsement is implied. Timekeeping regulations, international standards and technical arrangements may change after publication. Read more
