# info.description
Deterministic astronomical calendar engine: solar↔lunar (VN UTC+7 / CN UTC+8), VSOP87 solar terms, Jean Meeus / Hồ Ngọc Đức new moon, Can Chi, True Solar Time, NASA parity self-check. Not LLM-generated dates. Preferred docs: https://lab.quizzman.com/tool/about-calendar.md

# paths./today.get.summary
Today's solar/lunar / Can Chi for a region

# paths./astro/day-sky.get.summary
Day-sky snapshot for Sky Viewer (λ☉, solar term, moon phase teaching model)

# paths./astro/day-sky.get.responses.200.description
Sky / solar-term payload (use solarTerm.current)

# paths./astro/nasa-parity.get.summary
Self-check VSOP87 λ☉ and New Moon vs NASA/USNO sample points

# paths./astro/nasa-parity.get.responses.200.description
Parity table (equinoxes/solstices + new moon deltas)

# paths./astro/tet-divergence.get.summary
Scan years where Vietnam and China Tết (or month start) diverge

# externalDocs.description
About Quizzman Calendar (algorithms, applications, test cases)