🪐 Cosmic Clock

Quick how-to:

Date only → draws the geocentric sky for that day with north up (12 o’clock).

Date + latitude/longitude → enables the Orientation menu: Local noon puts the Sun at the top for that date/place; Sidereal (LST) aligns the meridian with the local sky; Fixed keeps north up.

Steps: (1) Enter date. (2) Optional: enter lat & lon. (3) Choose orientation. (4) Press Start. (5) Reset clears inputs and zeros all dials.

Clocks are visible. Enter a date (and optional lat/long) and press Start to rotate both faces.
⚠️ Antikythera-style mechanism. The Moon is the main dial that drives the system.

Legend & Dial Meanings

Hands (pointers)

Meridian — true-north reference line at 12 o’clock.
Sun — ecliptic longitude (zodiac position) on the top face.
Moon (phase) — synodic phase hand on the top face.
Moon (agri) — main agricultural/planning hand on the bottom face.
Lunar Mansions — sidereal-moon pointer.
Decans — 36 ten-degree sky segments.
Maya ring — 20-day cycle index.
Tepe ring — 12-division symbolic cycle.
Metonic — 19-year Moon/Sun calendar resonance.

Top Face — Ring Guide

  • Degree ring (outer ticks) — 0–360° scale with 30° zodiac marks.
  • Zodiac glyphs — 12 signs around the ecliptic.
  • Tepe symbols — 12 pictograms (cultural cycle).
  • Maya ring (20) — 20 day-signs.
  • Decans (36) — 36 ten-degree segments (Egyptian/astrological).
  • Lunar mansions (28) — sidereal lunar stations.
  • Metonic markers (19) — 19-year cycle pegs.
  • Moon phases — 🌑 🌓 🌕 🌗 markers.

Bottom Face — Ring Guide

  • Moon Cycle (8) — phase icons.
  • Moon Days (1–29) — synodic day number.
  • Olympiad (4y) — four-year cycle.
  • Agricultural 12 — month/seasonal labors.
  • Metonic (19y) — lunar-solar calendar repeat.
  • Saros (≈18y11d) — eclipse period.
  • Exeligmos (54y) — triple Saros correction.
  • Mesoamerican 52y — Calendar Round.
  • Native American Days (1–365) — solar day index.

Note: Planetary pointers for Venus/Saturn/etc. are not rendered in this build; the Sun and Moon are the active celestial hands. The colored hands for mansions/decans/Maya/Tepe/Metonic represent non-planetary cycles.