The meaning of the last quarter of the elf moon in World of Warcraft

The emblem of the last quarter moon is not WOW, but something worn by fairy girls in Warcraft.

According to geographical knowledge, when the two tips of the crescent moon are inclined downward, the downward rotation of the moon is ORZ. . .

The night elves believe in Ai Luen, the moon god.

Reasons for the formation of the moon phase:

Because the moon shines by reflecting sunlight, its relative position with the sun is different (longitude difference), so it will take on various shapes. As shown in the figure, at position A, the longitude difference between the sun and the moon is 0, which is called new moon or new moon. At this time, the moon is facing the earth in the dark and appears almost at the same time as the sun, so it can't be seen on the ground. At point C, the longitude difference of 90 degrees is called winding, and a half moon appears in the western night sky in the middle of the night; At point E, the longitude difference of the meridian is 180, that is, the full moon, and a full moon can be seen all night; G is the bottom chord, and the longitude difference is 270. At this time, the half moon only appears in the eastern half of the sky at midnight. The profit and loss cycle is called the new moon, which is about 29.5059 days long.

Moon phase type:

The moon phase is calculated by the difference between the sun and the moon (the following degrees are the difference between the sun and the moon), and * * * is divided into eight types:

New moon (the first day of the lunar calendar, the new moon): 0 degrees;

Upper Emei month (usually around the second day of February-around the seventh day of July): 0-90 degrees;

First quarter moon (around the eighth day of the lunar calendar): 90 degrees;

Convex moon (around the ninth day of the ninth lunar month-around the fourteenth lunar month): 90 degrees-180 degrees;

Full moon (full moon, 15th or 16th lunar month): 180 degrees;

The waning moon (around the 16th lunar month-around the 23rd lunar month): 180 -270;

First quarter moon (around the 23rd lunar month): 270 degrees;

Lower Emei month (around the 24th day of the lunar calendar-the end of the month): 270 -360 degrees;

In addition, the last day of the lunar month is called the dark day, that is, the moon is not seen;

There are four kinds of moon phases: new moon (the first day of the lunar calendar), first quarter moon (around the eighth day of the lunar calendar), full moon (around the fifteenth day of the lunar calendar) and last quarter moon (around the 23rd day of the lunar calendar), all of which have definite occurrence times and are calculated by precise orbit calculation.

How to identify the moon phase

Assuming that the full moon is a circle, no matter how the phase of the moon changes, the connecting line between its upper and lower vertices must be the diameter of the circle (the phase of the moon is irregular during an eclipse). When the outer edge of the moon phase we see is close to the C letter shape, then the moon phase at this time is before the fifteenth day of the lunar calendar. On the contrary, when the outer edge of the moon phase we see is close to the shape of the anti-C letter, then the moon phase at this time is after the fifteenth day of the lunar calendar.

The melody of knowing the moon phase:

Moon phase change song

The new moon on the first day is invisible only because it is trapped in the sun and the earth.

On the eighth day of the seventh lunar month, the half moon faces west.

When the full moon comes out on the 15th and 16th, the earth shoulders the sun and the moon.

Twenty-two, three and the last quarter of the moon, the moon faces east until midnight.