Formula · Astronomy and calendar
The five phases are not five parallel nouns but a cyclic group of order five. One step around the ring generates, two steps controls; both relations are just step sizes, and enumerating five elements verifies all of them.
Same structure as the ring diagram above
Astronomy and calendar
This one is astronomy and calendar: verifiable against civil dates and solar-term tables.
Related: Five phases glossary · all formulas · tools
Where is this formula used?
It is the same entry listed on the method page, used in pages such as Five phases glossary; the link above shows it in context.
Did you invent this formula?
This one is astronomy and calendar: verifiable against civil dates and solar-term tables.