China Time

How the Ancient Chinese Kept Track of Hours, Days, Years and Epochs

Non-Fiction - Historical
273 Pages
Reviewed on 08/11/2026
Buy on Amazon

This author participates in the Readers' Favorite Free Book Program, which is open to all readers and is completely free. The author will provide you with a free copy of their book in exchange for an honest review. You and the author will discuss what sites you will post your review to and what kind of copy of the book you would like to receive (eBook, PDF, Word, paperback, etc.). To begin, click the purple email icon to send this author a private email.

This author participates in the Readers' Favorite Book Review Exchange Program, which is open to all authors and is completely free. Simply put, you agree to provide an honest review an author's book in exchange for the author doing the same for you. What sites your reviews are posted on (B&N, Amazon, etc.) and whether you send digital (eBook, PDF, Word, etc.) or hard copies of your books to each other for review is up to you. To begin, click the purple email icon to send this author a private email, and be sure to describe your book or include a link to your Readers' Favorite review page or Amazon page.

This author participates in the Readers' Favorite Book Donation Program, which was created to help nonprofit and charitable organizations (schools, libraries, convalescent homes, soldier donation programs, etc.) by providing them with free books and to help authors garner more exposure for their work. This author is willing to donate free copies of their book in exchange for reviews (if circumstances allow) and the knowledge that their book is being read and enjoyed. To begin, click the purple email icon to send this author a private email. Be sure to tell the author who you are, what organization you are with, how many books you need, how they will be used, and the number of reviews, if any, you would be able to provide.

    Book Review

Reviewed by Carol Thompson for Readers' Favorite

China Time by Jeff Pepper is a fascinating exploration of how ancient Chinese civilization understood, measured, and organized time. Rather than focusing solely on clocks and calendars, the book examines the cultural, scientific, philosophical, and practical systems that shaped the Chinese view of hours, days, years, and even vast historical eras. Pepper begins by introducing readers to the earliest methods of tracking time, when people relied on the sun, moon, seasons, and natural cycles to organize daily life. From there, he guides readers through the development of the Twelve Earthly Branches, the Five Night Watches, water clocks, incense clocks, sundials, hourglasses, and other ingenious inventions. The book also explores lunar calendars, solar terms, heavenly stems, zodiac animals, fortune telling, dynastic eras, and astronomical observations. Throughout the narrative, Pepper demonstrates that timekeeping was deeply connected to agriculture, government, religion, philosophy, and everyday life.

China Time is clear, engaging, and highly informative. Jeff Pepper effectively combines historical narrative, cultural analysis, mythology, scientific explanation, and literary examples to create a rich reading experience. The book makes excellent use of comparisons between Chinese and Western systems, and illustrations, charts, stories, and historical examples enhance the material. Readers who enjoy history, world cultures, astronomy, philosophy, language, or the history of science will find much to appreciate. Pepper has a talent for making complex historical and scientific topics engaging, understandable, and entertaining for general readers. The result is an educational and enjoyable book that transforms a specialized subject into a fascinating journey through thousands of years of Chinese thought and innovation. This would make an interesting and informative resource for high school classrooms.

Asher Syed

China Time by Jeff Pepper traces how China learned to measure time from the sky, then used that knowledge to shape public life. The book begins with early farmers who watched the daylight because planting depended on the seasons. It then shows how court astronomers turned repeated observations into official calendars that gave each ruler a visible claim to Heaven’s order. When a Song envoy arrived on the wrong date, the error became a political matter, leading Sū Sòng to build a clock tower that displayed celestial motion for the state. Pepper carries that idea into village life, where almanacs guided a burial date or a move to a new home. China Time presents time as the system that connected a farmer’s season to an emperor’s claim to Heaven.

Jeff Pepper’s China Time is unique. The author treats time as a cultural system, not just what most of us think when we consider the time—it's only a clock. But it isn't, and Pepper does a brilliant job of taking us back and showing us why, and how. Pepper writes in an academic style that is largely comfortable to follow. I'm a bit of a mathlete, so the sums were fascinating to me, and the rest was all pretty easy to follow. The inclusion of Chinese phrases and linked terms is a nice bonus. The explanation of one kè as fourteen minutes and twenty-four seconds opened my eyes and turned an old term into something measurable for modern readers. The author has clearly researched this topic extensively and offers the kind of rare detail usually known only to a niche historian. Well written and downright engrossing, this book is a perfect fit for readers who are history fans, cultural learners, and looking for something different. Very highly recommended.

Leonard Smuts

For thousands of years, the internal workings of China remained a mystery. Recent research has uncovered some interesting innovations that were previously little known in the West. These include the measurement of time. Jeff Pepper sets out to explore this unusual theme in China Time. China evolved from an agrarian society into an industrial giant. Naturally, the way in which time was measured made similar strides. It was as much a cultural phenomenon as a system of regulation, and geographic variations were common. It all began by observing the sun and its movements. Solstices and equinoxes could be predicted. The seasons were pivotal, as they determined the crop cycles of planting and reaping. Calendars were developed as the relationship between the movement of the sun, the earth, and the moon became clearer. The naming of days and months took shape, with many variations. The water clock allowed greater accuracy of measurement and worked at night. Time was communicated to the people by sounding gongs, drums, and calling out. When more precision was required, the time periods were progressively split into smaller units. This book takes readers on a journey from water clocks and sundials to graduated oil lamps, candles, and finally complex mechanical devices.

Jeff Pepper went to China on a business trip in 2012, discovering a new world. He was particularly fascinated by the way in which the ancients kept time. The result is China Time. In Chinese culture, symbolism prevailed, with accompanying ritual and ceremony. Some days were more auspicious than others, and oracles were developed to reflect this. As Western influences arrived in China, their astronomers provided new theories. Although the Gregorian calendar was adopted in 1912, traditional calendars are still in use. The book provides a fascinating glimpse into Chinese history and culture. It reveals a society that existed in isolation yet had innovative ways of measuring time. The author brings his extensive research to readers in a readily understandable form for those not familiar with Chinese culture, making for easy and captivating reading. The many illustrations are equally intriguing and well presented. Extensive endnotes and a list of references round off this noteworthy publication.