Space & time / KNOWLEDGE DIRECTORY

Calendars & date selection

历法与择日

Connect lunisolar calendars, solar terms and traditional date-selection vocabulary. Calendar facts, local customs and interpretive claims are labeled separately.

A modern ink illustration of books, brushwork and mountains — Original ZenTell AI illustration · Contemporary artwork, not a historical object

History & reading context

The Chinese calendar is lunisolar: months follow new moons while solar terms follow the Sun. Almanac date selection adds a separate interpretive layer. Conversion requires calendar, time zone and leap-month information.

Sources for this tradition

Scope of this directory

Lunisolar and Gregorian calendars农历与公历Published 24 solar terms二十四节气Published Intercalary months闰月Published Almanacs通书与黄历Published Twelve day officers建除十二神Published Traditional date selection传统择日Published Time zones and daylight saving时区与夏令时Published Calendar conversion历法换算Published

Suggested learning sequence

Begin with vocabulary and its meaning within this tradition.
Distinguish textual context, calculation rules and school-specific interpretation.
When reading examples, check sources, methods and assumptions.

This directory provides bilingual introductions with concepts, structures, examples and sources. Entries are AI-assisted and editorially checked; deeper research and examples will be added over time.

Common questions

Is this the same as other systems?

Not necessarily. Shared vocabulary can have different meanings across traditions and should be read in its textual and school-specific context.

Are calculators or prediction tools available?

Introductory articles are available; there is no calculator or prediction service for this tradition yet. Available reflection experiences are listed in Tools.