Each verse-cluster, as a running sky simulation
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wherever this folder is hosted over HTTPS (same origin as the app, or a CORS-enabled host).
Chapter 1 — the foundational constants
The Sun's path tilted ~24° to the celestial equator; the ecliptic pole off the celestial pole.
The Moon's 5°-tilted orbit crossing the ecliptic at two nodes, where eclipses fall.
Each body's coming cycle through the zodiac drawn as a dated trail; Mars's retrograde loop.
Chapter 4 — spherical astronomy (the engine's home ground)
Equator, ecliptic, and the Sun walked through the four seasons.
The whole framework wheels westward — from outside, then as an observer feels it.
The sky reshaping from the equator to the pole across a latitude tour.
Horizon, meridian, prime vertical (samamaṇḍala), and the unmaṇḍala.
Solstice day-circles (dyujyā) and the equatorial RA/Dec frame.
The sunrise point migrating north and south through the year.
The Shanku Yantra: a gnomon casting its real shadow, and the Sun's amplitude (agrā).
The vernal point creeping westward through the nakshatras, century by century.
The full Moon at the node crossing the Earth's shadow-cone — the eclipse geometry.
Sun and Moon meeting at one longitude (new moon), then opposite (full moon).
Chapter 3 — the reckoning of time
The ascendant climbing the eastern horizon; signs of long and short ascension.
Nakshatras and tithis as the Moon sweeps the ecliptic; why adhimāsa is needed.
Mars followed against the stars, halting and looping backward near opposition.