Dong Gong Date Selection (董公擇日)

The classical day-selection manual 《董公選擇日要覽》 served VERBATIM: 144 entries — twelve solar (節氣) months × twelve day-branches, each keyed by its 建除 star exactly as the text prints it, and the star labelling PROVED consistent with the jianchu rotation law over all 144 entries at load, so the transcription guards itself. Each entry's classical prose is the verdict — its shining stars (黃羅紫檀, 天皇地皇), its warnings (損家長, 招官司), its 60/120-day windows, and its per-STEM exceptions (丁酉 blessed where 辛酉 is 正四廢) — served untouched: the engine refuses to flatten the text into a good/bad flag, because the text itself refuses to be flat. Date mode resolves the day pillar and the exact 節氣 month through the lunar oracle (a day before 白露 belongs to 申月; two days later 建 lands on 酉); the 三煞/四絕/四離 month heads and the appendix songs ride along. Cross-checked character-identical against independent reproductions of the tradition. A Ming-era manual for study and reflection — not advice.

Cost: 2 TIAN Points per call. tRPC procedure donggong.select.