The Moon's 18.6-year nodal precession. The Moon's orbit is tilted 5.14° to the ecliptic. The two points where it crosses — the ascending node ☊ and descending node ☋ — are not fixed: the whole node line regresses westward, completing a full circle every 18.61 years. When the ascending node lines up with the vernal equinox, the tilts add and the Moon swings to its extreme declinations (±28.6°) — a major lunar standstill, the event encoded at Stonehenge and Chimney Rock. The last one peaked in 2024–25. Its perigee meanwhile advances the opposite way, once round every 8.85 years.
Planets relative to Earth. Switch to the Earth-centred frame and let the trails run: each planet traces looping rosettes as it laps (or is lapped by) Earth — the retrograde loops that bedevilled astronomers for two thousand years. They're real; they're just parallax.
Earth's own precession. Earth wobbles like a slowing top: its spin axis sweeps a cone once every ~25,772 years, dragging the equinoxes westward through the zodiac at 50.3″ per year. Polaris is only the pole star of this era — run the tempo up and watch the duty pass to Errai, Alderamin, Deneb, and Vega before it comes back round.
Planet positions use J2000 mean Keplerian elements with secular rates — good to a fraction of a degree over ±a few millennia, drifting gracefully beyond. Built for curiosity, not navigation. BAGRI LLC.