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CULTURAL CALENDAR TOOLS
Explore traditional Chinese calendar systems through clearly explained English tools. Every live tool shows its method, cultural context, and practical limits.
AVAILABLE NOW
2 of 40 planned tools
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A date can be described through several related systems. The lunar calendar places months around astronomical new moons. The sexagenary cycle combines ten Heavenly Stems with twelve Earthly Branches. Four Pillars traditions often use solar terms, including Li Chun, to define year or month boundaries. These rules overlap, but they are not interchangeable.
Popular zodiac references commonly change the animal at Lunar New Year. BaZi methods may instead change the annual pillar at Li Chun, the Start of Spring solar term. For dates between those boundaries, two responsible calculators can display different year labels because they are applying different conventions. Our date calculator shows both instead of silently choosing one.
The two tools currently live here work at date level. They do not pretend to calculate a complete personal BaZi chart. Birth time, historical time-zone rules, longitude, the Zi-hour day boundary, and school-specific conventions require a separate workflow. Those controls will be introduced with the dedicated Four Pillars tool rather than hidden inside a simple date lookup.
Gan-Zhi labels are historically important calendar and cultural concepts. The tools explain and calculate those labels; they do not establish scientific predictions about health, relationships, money, or future events. Later divination tools will keep folklore clearly separated from factual calendar calculations and will identify their source traditions.