How many days does the Moon be full?

Updated on healthy 2024-07-24
5 answers
  1. Anonymous users2024-02-13

    Every thirty days, if it works for you, please click on the review.

  2. Anonymous users2024-02-12

    A synodic month, the length is roughly days + days = days.

  3. Anonymous users2024-02-11

    The moon is at its fullest and brightest when it is "looking". What is"Look"? 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 the tenth day of the lunar calendar.

    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.

    As we all know, the lunar calendar is based on the law of the moon's orbit 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", "hope" depends on the movement of the moon, usually, it will appear on the tenth day of the lunar calendar.

    Five, sixteen and two days.

    The root cause of the late arrival of the Full Moon is caused by the unconstant speed at which the Moon revolves 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".

    When the moon moves in the opposite direction to the sun to the earth, we can see a full moon, which is called "looking".

    When the moon moves between the earth and the sun, the half of the moon illuminated by the sun is exactly facing away from the earth, and we don't see it.

    Seeing the moon, this is called "Shuo".

    From "Wang" to "Wang", or from "Shuo" to "Shuo", it takes an average of 29 days, 12 hours and 44 minutes, which is called a synodic month.

    Shuo must be on the first day of each month of the lunar calendar.

    After the new year, it takes an average of 14 days, 18 hours and 22 minutes to look at the moon, so the moon often does not occur on the night of the fifteenth, but on the night of the sixteenth, as the saying goes: "The moon of the fifteenth is sixteen round", which is the truth.

    Since the speed of the moon's revolution around the earth is uneven, sometimes fast and sometimes slow, the length of the synodic moon can differ from its average by up to 6 hours, so the moon can also be delayed until the seventeenth night.

    Of course, if the new year occurs in the early morning of the first day of the new year, then the hope will occur on the evening of the fifteenth, so there are also years in which the hope happens to occur on the night of the Mid-Autumn Festival.

  4. Anonymous users2024-02-10

    Not fixed, with a difference of between 14-16 days.

  5. Anonymous users2024-02-09

    January 31, 2018 is the fifteenth day of the lunar month, so the moon is a full moon, and it is the third of the four full moons in a quarter.

    A "blue moon" is not rare, but if the "blue moon" is a "supermoon" and a total lunar eclipse occurs at the same time, it is a very rare celestial phenomenon. The supermoon and total lunar eclipse have occurred only five times in the 100 years of the 20th century, with the last occurrence of this phenomenon dating back to March 31, 1866.

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