Name the context
Separate documented history, living custom, modern interpretation, and our own reflective exercises.
Hours, Instruments & Public Time
Chinese Timekeeping: Shichen, Clocks & Night Watches
Follow the twelve shichen through water clocks, incense clocks, astronomy, city signals, night watches, navigation, and modern conversion questions.
Explore by topic
Find your way into the subject
- Twelve shichen
- Shi, ke & geng
- Water clocks
- Incense clocks
- Astronomical clocks
- Night watches
- Public time signals
- Conversion questions
A grounded approach
Practice with context
Translate with care
Use natural English while keeping Chinese terms and their cultural setting visible.
Keep claims proportionate
Present symbolic or traditional frameworks as such, and describe measurable conditions separately.
Selected reading
Begin with these guides
Guide 01
The 12 Shichen: A Complete Guide to Traditional Chinese Hours
Use the complete 12-shichen chart, then explore how traditional Chinese hours connect Earthly Branches, day-part names, timekeeping devices, literature, and birth-time systems.
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Guide 02
How Ancient China Told Time: Sundials, Water Clocks, Incense, and Bells
Compare the main ways time was observed, measured, displayed, and announced in imperial China—from sunlight and flowing water to incense, clock towers, drums, and bells.
Read the guideGuide 03
How to Convert Ancient Chinese Time: Shi, Ke, Geng, and Dian
Use a cautious conversion guide for shichen, ke, night watches, and watch beats—and learn why the dynasty, instrument, season, and context can change the answer.
Read the guideGuide 04
Chinese Water Clocks: How Clepsydras Measured Time
Learn how Chinese water clocks used regulated flow, vessels, floats, indicator rods, scales, and trained timekeepers—and why pressure, temperature, and calibration mattered.
Read the guideGuide 05
Incense Clocks: How East Asian Timekeepers Measured a Burning Trail
Learn how incense clocks used calibrated powder paths, seals, trays, tampers, and pierced covers to mark duration—and what surviving museum objects can and cannot prove.
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Guide 06
Su Song's Clock Tower: The Water-Powered Observatory of Song China
Explore how Su Song's 12-meter water-powered tower combined an armillary sphere, celestial globe, hydropower, gearing, time displays, bells, gongs, drums, and night reporting.
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Guide 07
Night Watchmen in Ancient China: The Workers Who Made Time Public
Meet the gengfu who carried nighttime signals through streets and compounds, and learn why keeping time required labor, sound, authority, and local knowledge.
Read the guideGuide 08
A Day in Ancient China Through the Twelve Shichen
Walk through a source-bounded composite day from midnight to settled night, using traditional day-part names while keeping season, occupation, place, and status visible.
Read the guide