Spike moon, last quarter moon, full moon, frosty moon. . What does each mean?

Spike Moon "Spike Moon" refers to the color of the moon like a spike, but not the shape of a spike, because the wolf's teeth are sickle-shaped hooks, but they can only be regarded as half of the first quarter moon or the last quarter moon, and the other half of the buried roots are not equivalent sickle-shaped hooks. The adjective spike color is also very clear in describing the color but not the shape of the moon. Therefore, "Sui Yue" is to paint the color of the moon with a slightly mottled beige color like Sui, mainly relying on the image of "Sui" to emphasize the depression and vastness of the scenery. On the 22nd and 23rd of each month in the lunar calendar, only the semicircle on the east side of the moon can be seen. This stage of the moon is called "the last quarter moon", and the moon at this time is called "the last quarter moon". Supplement: The full moon refers to the moment when the difference between the yellow meridian of the moon and the sun reaches 180 degrees (also called full moon), and the moon phase at this time (also called full moon). At the full moon, the moon and the sun are on both sides of the earth. If it is just the opposite at this time, there will be an eclipse. The day and night movement of the full moon is almost the same as that of the sun in spring and autumn, winter and summer. The sun rises at dusk, lies in the middle of the south at midnight, and sets at sunrise. In summer, you can see that most parts of China rise from the southeast and cross the southern night sky at low altitude. In winter, the full moon in the middle of the south is higher in the night sky. The vernal equinox rises near due east and sets near due west. In the lunar calendar, there must be a full moon around 15 every month. So the fifteenth day of the lunar calendar is called "looking at the sun". Supplement: Interpretation of Frost Moon: 1. It refers to the seventh month of the lunar calendar. 2. The moon on a cold night. 3. The moon in winter.