Background knowledge
Plain-language explanations of the ideas behind the lunar calendar and day selection: Can Chi, solar terms, auspicious days.
Heavenly Stems, Earthly Branches and the 60-cycle What Can Chi is, how the year, month, day and hour are named, and the harmony and clash relations among the 12 animals. Read more → The 24 solar terms What the 24 solar terms mean, when each begins, and how they shape the lunar calendar and leap months. Read more → Auspicious (Hoàng đạo) and inauspicious (Hắc đạo) days The twelve stars from Thanh Long to Câu Trần, how auspicious days and hours are found, and how to read them sensibly. Read more →