When is the moon brightest and roundest, and when is the moon the roundest and brightest?

China-Singapore Guangdong, December 10 (Guo Jun, Li Jianji) According to the Guangdong Astronomical Society**: On December 13 this year, the moon is the roundest, largest and brightest of the year. As long as the night sky is clear, all parts of China can enjoy the roundest, largest and brightest full moon of the year.

In the area around 27 degrees north latitude in China, you can also see the strange celestial phenomenon of "life sees the moon at the head".

At 0:37 a.m. on December 13 this year, the Moon, the Earth, and the Sun aligned in a straight line, and the Moon was at its fullest. At 6 a.m. on December 13 this year, the Moon is the closest to the Earth in the whole year, so the apparent diameter of the Moon is the largest, reaching 2,046 arc seconds, which is 96 arc seconds larger than the apparent diameter of the Sun on that day. If you take pictures of the moon and the sun with a digital camera on the day (with a filter), you will feel that the moon is significantly larger than the sun.

In Fuzhou, Nanchang, Changsha and Guiyang and other regions, when the moon is in the middle of the sky, you can also enjoy the special scene of "there is a bright moon on the head, and there is no dark shadow under the feet". Since the midheaven on the moon is only related to longitude and not latitude. Therefore, the time of the midheaven of the moon all around:

In the area of 120 degrees east longitude (Changzhou City, Jiangsu Province), it is 23:51 on December 12; At 110 degrees east longitude, it was December 13, 34 a.m.; In the area of 100 degrees east longitude, it was 1:15 a.m. on December 13. In Guangzhou, the best time to enjoy the moon (mid-moon in the middle of the moon) is 0:19 a.m. on the 13th of this month, when the moon's horizon altitude angle is 86 degrees, and the moonlight is the brightest.

If "the fifteenth day of the eighth month of the lunar calendar is the Mid-Autumn Festival", then the 15th day of November of the lunar calendar is the "middle winter". The full moon that appears in the 11th month of the lunar calendar is also called the "mid-winter moon". Experts from the Guangdong Astronomical Society believe:

The Mid-Winter Moon is brighter than the Mid-Autumn Moon because the Mid-Winter Moon is a zenith moon and the moonlight shines vertically towards the Northern Hemisphere.

Fifteen moons and sixteen rounds.

1. The moon is not round at the same time every year, but the difference in the time of the circle is very small, so we approximate that the moon is round on the 16th day of the eighth month of the lunar calendar, that is, the day after the Mid-Autumn Festival.

2. The light reflected on the moon is also different in different regions, and if you want to know exactly when the moon is absolutely round, you still need to use celestial observations and accurate calculations by scientists.

3. The most perfect and bright moment of the moon is when "looking". What is "Hope"?On the first day of the lunar calendar, the moon moves between the earth and the sun, and the illuminated hemisphere of the moon carries the earth on its back, and we cannot see the moon, which is called "new moon", also called "new moon"; It's time for the lunar calendar.

Ten. On the fifth and sixteenth, the bright side of the moon is all facing the earth, and we see the round moon, which is called the "full moon", also called "hope". According to the lunar calendar, this day is the first day of the month. But on the same new day, the new moon may occur in the early morning or at night, and each synodic month itself has its own length and shortness.

In this way, the "hope" of the moon's fullest hour can occur as early as the early morning of the 15th and as late as the morning of the 17th.

4. The lunar calendar is formulated based on the law of the moon's rotation around the earth, so it corresponds to the moon very accurately. But the lunar calendar is a combination of the advantages of the lunar calendar and the solar calendar, which will inevitably have errors, when people put the beginning of the lunar calendar must be "Shuo", "Wang" depends on the movement of the moon, usually, it will appear in the lunar calendar.

Ten. Five, sixteen and two days.

5. The root cause of the late arrival of the full moon is caused by the unconstant speed of the moon's revolution around the earth. Disturbed by hundreds of factors, the speed of the Moon's orbit around the Earth is sometimes fast and sometimes slow, from "Shuo" to "Shuo" or from "Wang" to "Wang", the average cycle is days, but the difference between the longest and shortest periods is 13 hours. If the "footsteps" of the moon are slow before "looking", it may take 16-17 days to travel from "Shuo" to "Wang", so there will be "15 moons and 16 rounds, or even 17 circles".

I'm coming to you, when is the moon the roundest and brightest? I think the moon on August 15 is the roundest and brightest, so every time it is August 15th, the moon is the roundest, the brightest 15 is not round, 16 is round, the group likes it, thank you.

As the saying goes, the moon of the fifteenth is sixteen round, so the moon of the fifteenth to the sixteenth is round, and the normal moon of the fifteenth should be the roundest.

The moon is at its roundest and brightest on the night of the 16th of each month, around 22 o'clock.

The moon is round on the fifteenth, and even more round when it is reunited.

When the moon is full.

The brightest was on August 15

Do you want to know that there is a full moon in the world? However, the heart is round, and the moon is round!! There are some things that no one will know!!

Where is there a full moon in the world? However, the heart is round, and the moon is round!!