Atelier Horologique
Metonic Cycle 19-Yr Sync
The 37-Gear Hellenistic Masterwork
Rotate the master solar crank to drive the differential gear trains. Watch Hipparchus's off-center pin-and-slot lunar anomaly gears reproduce Keplerian orbital physics 1,800 years ahead of their time.
ZODIAC: LIBRA 18° • THOTH 22
LUNAR ANOMALY: +2.4° (PERIGEE ACCEL)
Drag to crank gears • Pinch or scroll to inspect tooth meshing
TIMELINE
Day 0
Front Dial Readout
b1 Drive Arbor
EGYPTIAN MONTH
Thoth (Θώθ)
Day 1 • Fixed 365d
ZODIAC CONSTELLATION
Libra (Ζυγός)
18° 34' Celestial Arc
SYNODIC MOON PHASE
Waxing Crescent
Age: 4.2 days / 29.53d
Back Spiral Dials
e3 / n1 Gear Trains
METONIC 235-MONTH SPIRAL
Spiral Turn 1 of 5
Month 1: Phoinikaios
Regular Month
OLYMPIAD SUBSIDIARY DIAL
Year 1
OLYMPIC & ISTHMIAN GAMES
Held at Olympia & Corinth
🏆
SAROS 223-MONTH ECLIPSE SPIRAL
Turn 1 of 4
Σ
Solar Eclipse Window
Month 18 of 223
EXELIGMOS
+0 hrs
🔬
EPICYCLIC PIN-AND-SLOT ANOMALY
To model the Moon's variable orbital speed, ancient mechanicians mounted gear k1 eccentrically on turntable e3. An off-center bronze pin engages a radial slot on gear k2, accelerating and decelerating the lunar pointer across apogee and perigee.