Lunar mansion 18 of 28

Hairy Head昴

One of the seven mansions of the White Tiger of the West.

Group
White Tiger of the West
Weekday planet
Sun
Animal
Rooster
Branch
酉
Building
Bad
角亢氐房心尾箕斗牛女虛危室壁奎婁胃昴畢觜參井鬼柳星張翼軫
Its place among the twenty-eight

昴七星,天之耳目也,主西方,主獄事。

Jin Shu, Treatise on Astronomy

What it is

The eyes and ears of heaven, in charge of prisons. These are the Pleiades.

In the almanac

The almanac gives each day one mansion in a fixed cycle. Xie Ji Bian Fang Shu traces the day-by-day count to an old Western Regions text on the seven planets. The Building row is from the Yu Xia Ji, which rates each mansion for building work.

Sources Jin Shu, Treatise on Astronomy; Xie Ji Bian Fang Shu, vol. 1; Yu Xia Ji.