Chronometry & Calendars Lab
TimeLedgers Editorial Archive
Explore our comprehensive research guides on global calendar systems, atomic frequency standards, international time zones, and the deep history of horology.
The Geological Time Scale: Deep Time, Radiometric Isotope Decay, and Chronostratigraphic Units
Mr. Jordon Funk II
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September 28, 2026
The Science of Leap Seconds: Earth’s Rotational Braking, Tidal Friction, and the 2035 Sunset
Mr. Jordon Funk II
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September 27, 2026
Astronomical Time vs. Civil Time: Sidereal Days, Synodic Solar Time, and the Equation of Time
Mr. Jordon Funk II
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September 26, 2026
Atomic Timekeeping and the SI Second: Cesium-133 Hyperfine Transitions and Optical Frequency Combs
Mr. Jordon Funk II
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September 25, 2026
Computer Timekeeping Protocols: Network Time Protocol (NTP), UNIX Epoch, and the Year 2038 Bug
Mr. Jordon Funk II
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September 24, 2026
Solving the Longitude Problem: John Harrison and the Invention of the Marine Chronometer
Mr. Jordon Funk II
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September 24, 2026
Inside Mechanical Clocks: Escapements, Pendulums, Balance Springs, and Gear Trains
Mr. Jordon Funk II
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September 23, 2026
The Epoch of Horology: The Complete History from Ancient Sundials to Quantum Optical Clocks
Mr. Jordon Funk II
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September 22, 2026
Babylonian Astronomy and Sexagesimal Time: Base-60 Geometry and the 19-Year Metonic Cycle
Mr. Jordon Funk II
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September 21, 2026
The Evolution of Roman Timekeeping: From Romulus and Numa Pompilius to Julius Caesar’s 445-Day Overhaul
Mr. Jordon Funk II
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September 21, 2026