Winter Solstice冬至

Sunrise

In Beijing, as the book records it, the sun rises 31°18′ south of due east.

Three pentads

Each term splits into three five-day pentads, each named for a sign in nature.

1. 1蚯蚓結Earthworms knot together
2. 2麋角解Elk shed their antlers
3. 3水泉動Springs begin to stir