Mortal ravings - 22.6.15 - Moon in a foreign land

Holy matters:

On a normal day, I'm so busy that I can't remember to look at the calendar. I was in a daze in the room last night, and when I raised my head, I saw a bright moon through the glass window. I don't know when, I quietly climbed to the top of the building. I was overjoyed and glanced at the calendar, only to realize that it was the 16th day of the fifth month of the lunar calendar, no wonder I could see the big moon. And such ordinary moonlight can only be seen by chance in Shu Kingdom. We all know that the capital city is cloudy, and it is a small blessing to be able to coincide with the middle of the lunar month.

The moonlight is sultry, and I greedily smelled the moonlight by the window for a while, and suddenly a question came to my mind, why is there a saying in the proverb that "the moon is fifteen and sixteen rounds", is it true? So I checked it in the morning, and the scientific statement is:

 The orbit of the moon around the earth is an ellipse. The perigee is 360,000 kilometers away from the earth, and the apogee is about 400,000 kilometers. Due to the relationship of gravity, the speed of the moon's revolution around the earth is not constant. The perigee is faster and the apogee is slower. So each lunar month itself has its own long and short. If it is fast in the first half of the month, it will arrive at the position of the full moon on time, at the fifteenth round; if it is slow, it will be "later" and arrive at the position of the full moon in time for the sixteenth or seventeenth. The phase of the moon changes for a week, that is, from "New" to "New" or from "Wang" to "Wang", the average period experienced is 29.53 days, but the difference between the longest and the shortest period is 13 hours. If the moon's revolution speed before "Wang" is slow, it may take 16-17 days from "Suo" to "Wang". The lunar calendar stipulates that the new moon is the first day of each month, but the new moon may occur in the early morning or at night, which also leads to the "look" at the fullest moment of the moon. On the night of the 16th, the early morning of the 17th is also possible. 

Sometimes I have to admire how subtle the observation power of the ancients is. If it were me, I would definitely not be able to do it. Thinking about it further, the first person to discover that the moon is 15 and 16 is round must also be a curious and observant person. It may be a scholar who is underappreciated. Every day, he studies hard on the lonely lamp. When he is tired of reading, he looks out at the night sky from the window, and occasionally finds the difference between the fifteenth and sixteenth days of looking at the moon, which is recorded and circulated in Hereafter. Or a business traveler who travels at night, driving forward in the quiet wilderness trail, raised his head by chance, and discovered the unknown secret of the moon.

Influenced by martial arts novels and film and television dramas when I was a child, I felt that the moon must have mysterious power. Otherwise, why some masters and gods can absorb the essence of the sun and moon, and greatly increase their skills. The most impressive thing is the infinite power of the moon in the Hong Kong martial arts film "Sun Moon Sword" when I was a child. Every time I see Zhang Weijian's A Yue holding the Moon Sword to absorb the power of the moon, he is so handsome and cool , all excited. This TV series has had such a great impact on me that many years later, whenever I see the sun and the moon shining in the evening or in the early morning, I will think: Wow, the sun and the moon are shining, if the sword of the sun and the moon is in hand, That's invincible, haha (according to the story in "Sun and Moon Divine Sword", when the sun and the moon meet, it is also the time when the Sun and Moon Divine Sword is the most powerful). Every time I think of this, I can't help but smile.

The weather in my hometown is getting more and more difficult to see. Every time I go home for a reunion, it is mostly on the New Year's Eve of the twelfth lunar month. It is rare to see the true face of the moon. But this doesn't prevent it, because whenever I feel homesick, in addition to making a phone call to my family, if I'm a bit hypocritical, I can also look at the moon in the night sky of Shu Kingdom, because my hometown and I will be covered by that silvery white. , have the same mind.

Matt City lives forever!