Chinese auspicious hour selection, 择时, 时辰吉凶, 黄道吉时, lucky hours, best time of day, 嫁娶吉时

Chinese auspicious hour selection, 择时, 时辰吉凶, 黄道吉时, lucky hours, best time of day, 嫁娶吉时. Returns all 12 shichen (two-hour periods) of a date, each with its 宜 (favorable), 忌 (taboo) activities and 黄道/黑道 quality. Optional activity param returns the best hours for that activity. Pairs with /almanac/select: which day, then which hour. For AI agents handling event timing, wedding/ceremony hour selection.