Changes in the moon's phase within a month
Within a month, the moon was generally divided into the stages of the new moon, crescent moon, first quarter moon, full moon, moon, waning moon, last quarter moon, waning moon, and so on. The first day of the lunar calendar was the new moon. The moon moved between the earth and the sun. The back of the moon was illuminated by the sun, so people on earth could not see it. The moon and the sun rose almost at the same time and set at the same time. After the new moon, a crescent moon would appear around the third or fourth day of the lunar calendar. Shortly after the sun set, a crescent moon shaped like an eyebrow could be seen in the western sky. The protruding part of the moon was facing west, forming an inverted C shape. The " first quarter moon " appeared around the seventh day of the lunar calendar. The first quarter moon would appear in the southwest sky in the first half of the night. From the northern hemisphere, the right half of the moon was illuminated, forming a semicircle. Around the 11th and 12th of the lunar calendar, there would be a "full moon". Its shape was similar to that of a full moon, but it was slightly less full than a full moon. Because it was about to usher in a full moon, it was also called a gradually full moon. The 15th and 16th of the lunar calendar was the full moon. The Earth was located between the sun and the moon. The side of the moon facing the Earth would be illuminated, and the round moon could be seen all night. Around the 18th and 19th of the lunar calendar, there would be a " waxing and waxing moon." This was the stage where the moon began to wane after the full moon. The " last quarter moon " appeared around the 22nd of the lunar calendar. In the southeastern sky in the second half of the night, a semi-circular last quarter moon could be seen. From the northern hemisphere, the left half of the moon was illuminated. At the end of the lunar month, a "waning moon" would appear. At dawn, it could be seen in the eastern sky. The protruding part of the moon was facing east, like the letter "C". After that, the moon returned to the new moon and began a new cycle of changes. The cycle of the moon's phase change was about 29.53 days. The novel New Moon is equally exciting. Everyone is welcome to click and read it!
The phase of the moon in a month
The changes of the moon in a month were as follows: 1. New Moon (New Moon): Appears on the first day of the lunar calendar. The moon is between the earth and the sun, rising and setting with the sun. When observed from the back of the moon, the moon seems to be completely dark. 2. ** Emei Moon **: Appears on the second to seventh day of the lunar calendar. It is shaped like a sickle and can only be seen after sunset. 3. ** First Quarter Moon **: Appears on the 7th and 8th day of the lunar calendar. The sun, earth, and moon form a right angle. It rises at noon and appears in the south sky at dusk. It can be seen in the first half of the night. 4. ** Convex Moon **: Around the 11th or 12th day of the lunar calendar, it will continue to light up and face west. It will set in the west before dawn and can be seen most of the night. 5. ** Full Moon (Wang)**: Appears around the 15th day of the lunar calendar. The sun rises from the east after sunset. Midnight is in the sky due south. It sets in the west in the morning and can be seen all night. At this time, when observing the moon from the direction of the moon, the moon is almost completely bright. 6. Last quarter moon: Appears on the twenty-third day of the lunar calendar. The sun, the earth, and the moon form a right angle. Midnight rises from the east. The sunrise hangs high in the southern sky. At noon, it sets in the west. It can be seen in the second half of the night. 7. Waning Moon: Appears at the end of the 24th lunar month, also known as the second half of the crescent moon. The upper crescent moon appears in the evening and the first half of the night in the western sky, and the lower crescent moon appears in the eastern sky at dawn and the second half of the night. The cycle of the moon's phase change was 29.5306 days, which was 12:44:3 on the 29th. This cycle was called the lunar month. The novel New Moon is equally exciting. Everyone is welcome to click and read it!
Draw a moon phase map for a month
One month, moon phase with date
The moon's phase was based on the different positions of the Earth, the Moon, and the Sun. The part of the moon that was illuminated on Earth changed periodically, showing various round and waning shapes. The following is a rough picture of the moon with dates (based on the lunar calendar): The first day of the lunar calendar: New Moon. At this time, the moon is between the sun and the earth. We can hardly see the moon. From the third to the fourth day of the lunar calendar, the crescent moon was visible in the western sky after sunset. From the seventh day to the eighth day of the lunar calendar, the first crescent moon, its bright face facing west, rises at noon and sets in the middle of the night. Half of the moon can be seen illuminated. Lunar calendar 12 to 13: The moon is gradually full, most of the moon is illuminated, and the bright part gradually increases. The fifteenth to sixteenth of the lunar calendar: Full Moon. The Earth is located between the sun and the moon. The entire moon is illuminated and visible all night. From the 18th to the 19th of the lunar calendar, the crescent moon gradually waned, and the bright parts began to decrease. Lunar calendar 22 to 23: The last quarter of the moon, bright facing east, rises at midnight, sets at noon, and you can see half of the moon illuminated. The waning moon appeared in the eastern sky before dawn. It was a thin crescent moon that gradually transitioned to a new moon. The novel New Moon is equally exciting. Everyone is welcome to click and read it!
What is the moon phase at the beginning of the month called?
The moon at the beginning of the month was called the new moon or the new moon. The new moon (New Moon) appeared on the first and second day of each lunar month. At this time, the moon and the sun were in the same direction on the celestial sphere, and the moon was almost invisible. As the moon gradually moved away from the sun, it would slowly reveal a crescent moon that curved to the right, and the crescent moon would gradually become larger. The novel New Moon is equally exciting. Everyone is welcome to click and read it!
Diagram of the Moon Phase Changes
The law of the moon's phase change was: new moon (On the first day of the lunar calendar, the moon is located between the sun and the earth, so it is difficult to see the moon from the earth) → Emei Moon (On the third or fourth day of the lunar calendar, a thin silver hook-like moon can be seen in the western sky) → First Quarter Moon (On the seventh and eighth day of the lunar calendar, the moon can be seen in the middle of the night. It comes out from the west of the sky, and the moon faces west) → the crescent moon (The upper crescent moon appears on the 11th and 12th of each lunar month; the lower crescent moon appears on the 18th and 19th of each lunar month) → the full moon (on the 14th, 15th, 16th, or even 17th of each lunar month, the moon and the sun are on both sides of the earth, and the moon seen on earth is the roundest) → the last quarter moon (on the 22nd and 23rd of each lunar month, visible in the middle of the night, the moon faces east) → the waning moon → the new moon, and so on. The main reason for this was that the moon itself did not emit light and was not transparent. Moreover, the relative positions of the moon, the earth, and the sun were constantly changing, causing the parts of the moon that were illuminated by the sun to present different images. The novel New Moon is equally exciting. Everyone is welcome to click and read it!
Diagram of Moon Phase Changes
The sequence diagram of the moon's phase changes
The order of the moon's phase changes was: New Moon (the first day of the lunar calendar, rising at 6:00 in the morning and setting at 18:00 in the evening, invisible, otherwise known as New Moon) → Emei Moon → First Quarter Moon (the seventh and eighth day of the lunar calendar, rising at 12:00 in the afternoon and setting at 0:00 in the morning, visible in the first half of the night) → Full Convex Moon → Full Moon (the fifteenth and sixteenth day of the lunar calendar, rising at 18:00 in the evening and setting at 6:00 in the morning, visible all night, otherwise known as Wang) → Waning Convex Moon → Last Quarter Moon (the twenty-second and twenty-third day of the lunar calendar, rising at 0:00 in the afternoon and setting at 12:00 in the afternoon, visible in the second half of the night) → Waning Moon → New Moon, and so on. Moreover, due to the different latitudes of the Earth, the moon phase seen in the northern and southern hemisphere would be reversed. The novel New Moon is equally exciting. Everyone is welcome to click and read it!
The law of the moon's phase changes is summarized
The complete memory of the changes in the moon phase
The mnemonic chant for the changes in the moon's phase was "up, west, west, down, east." Its meaning was: the first quarter moon appeared in the first half of the lunar month in the first half of the night, the moon facing west (the concave side facing east), located in the western half of the sky (the concave side facing east); the last quarter moon appeared in the second half of the lunar month in the second half of the night, the moon facing east (the concave side facing west), located in the eastern half of the sky (the concave side facing west). There was also a song about the changes of the moon: "On the first day of the lunar month, the new moon cannot be seen, only because it is trapped in the sun and the earth. On the seventh day of the lunar month, the first quarter of the moon, half of the full moon faces west. The full moon appears at the age of 15 or 16, and the earth has the sun and moon on its shoulders. The moon faces east at the end of the night." The novel New Moon is equally exciting. Everyone is welcome to click and read it!
Diagram of the changes in the moon phase of the watch
The cycle of the moon's phase was about 29.53 days, which was called a lunar month. The order of the moon's phase change was: New Moon, Crescent Moon, First Quarter Moon, Convex Moon, Full Moon, Convex Moon, Last Quarter Moon, Waning Moon, New Moon, and so on. On the watch, the moon phase function was a simulation of the changes in the moon phase. There were three common ways to display the moon phase on a watch: a single moon, a double moon, and a pointer moon. The most common one was a single moon. A single moon usually had a moon phase disk set at 6 o'clock or 12 o'clock on the dial, which appeared as a white moon that was blocked by the lower disk to form a crescent moon, but sometimes it would appear at different positions such as 10 o'clock or 2 o'clock. The bimonthly moon phase would have two moons, which was mainly designed to take into account the different appearances of the moons seen by the wearer in different positions in the northern and southern hemisphere. However, it was difficult to provide a special watch and moon phase change diagram based on the current reference materials. The novel New Moon is equally exciting. Everyone is welcome to click and read it!