ding-wei day pillar

Fire generates earth among the elements, so 丁 pours into 未, the Goat, beneath it. Inside, this site's table lists 己 as the Eating God, 丁 as the Friend and 乙 as Indirect Resource. 三命通會 swaps 甲 for 乙, and that swap would turn the last into a Direct Resource.

三命通會 卷一 calls this 火光也, firelight, then writes 同上 to point back at the moon of 丙午 and its likings. Both lights sit under the 納音 Water of the Milky Way. The entry also carries the tag 羊刃, the blade term that 神峰通考 lists for a yang stem meeting its yin partner. This chapter puts it on 丁未, 己未 and 癸丑 as well, and gives no rule for doing so.

Crown and Belt, 冠帶, takes its name from the formal dress of coming of age. 丁 counts backward from 酉, so 未 is the third step for this stem.