Day spirit
Tiān Xíng
Heavenly Punishment
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
理者法官故辰為天刑也
The Judge is a legal officer, and so 辰 is Heavenly Punishment.
協紀辨方書 卷七
About this entry
天刑 is the third of the twelve and the first of six spirits that 協紀辨方書 卷七 and 星厯考原 卷五 call 黑道, the black path. The name reads harshly, yet it marks a seat in an arrangement of twelve, occupied one day out of every twelve. 李鼎祚 gives 寅 as its first-month branch, with the count then running on through the yang branches.
神樞經, quoted in 卷七, says the days held by the black-path spirits are not for earthworks, house building, moving, long travel, weddings or sending out armies. That is the old text's own list, and the 1741 editors remark that it never gives a reason. 曹震圭 called this spirit 蚩尤 and imagined an office of punishments.
The editors settle it on the 辰 branch and explain it through a star called the Judge at the horn of the eastern sky. The calculator shows this spirit when the day branch reaches third place in the month's run.
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.