Lunar mansion
Zhěn
Chariot
An almanac describes traditional day-types. It cannot decide health, money, law, marriage or children. Burial, marriage and medical items on these pages are what a book states, never advice.
In the classical sources
軫居其旁則取蚓為蛇之類以配之
軫 lies alongside, and so it takes the worm, a kind of snake, as its match.
協紀辨方書 卷一
About this entry
The worm is the animal of 軫 in 協紀辨方書 卷一, a small kin of the snake, and the 巳 palace holds both. Last on this site's list, it leads back to 角.
Its group under 星厯考原 卷五 is water, with 壁, 參 and 箕, and the modern weekday is Wednesday. 翼 sits before it. That book admits the start of the whole cycle cannot be known, so last here means only last in this table.
Where this text comes from
The Chinese follows the Wikisource typed text of the Siku copy, under its CC BY-SA terms. Statements about the calculator describe its own rules, and modern practice is labeled as modern.
The English here is our own plain wording. Lists keep the items of the source.