How often does the 30th day of the second lunar month appear? Is there any pattern?
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Introduction: I believe that many people have the impression that February only has 28 days or 29 days in a leap year, which is rather vague when it comes to February in the lunar calendar. So how often does the 30th day of the second lunar month occur? Is there any pattern? Next, follow the editor to learn about the mystery of February 30th of the lunar calendar! February is such a beautiful month, when everything comes back to life and welcomes spring. Let us have a deeper understanding of every detail of the second month of the lunar calendar. The lunar calendar is based on the new and full moons. The duration of the synodic month is 29 days, 12 hours, 44 minutes and 3 seconds (that is, 29.5366 days), so the lunar calendar also has a long month of 30 days and a short month of 29 days. However, it is not exactly the same as the pure lunar calendar, because the pure lunar calendar is arranged with alternating long and short months, while the long and short months in the lunar calendar are determined by calculation. The first day of every lunar month is the "new moon" (when the moon is between the sun and the earth, with its dark half facing the earth). Sometimes there may be two long moons, or two short moons in succession. Since the synodic month is slightly longer than 29 and a half days, there are approximately 53 long months and 47 short months in every 100 calendar months in the lunar calendar. The lunar calendar basically has 12 months as a year, but the time of 12 synodic months is 354.3667 days, which is about 11 days different from the tropical year. This means that every three years there will be 33 extra days, or more than one month. In order to eliminate the extra days, one month is added every three years. This is the leap month in the lunar calendar. A year with a leap month is also called a leap year. So there are 13 months in a leap year in the lunar calendar. As for which month to add as a leap month, it is determined by the solar terms. The length of the lunar months is very irregular. Sometimes there are two, three, or four long months in a row, or two or three short months in a row. The length of the years is also different, and the gap is very large. The distribution dates of the solar terms and the central terms in the lunar calendar are very unstable, and the range of date fluctuations is very large. From this perspective, the lunar calendar seems to be very complicated. actually. The lunar calendar does follow a certain cycle: since the number of days in nineteen tropical years is almost equal to the number of days in nineteen lunar years, the lunar calendar remains almost the same every nineteen years. Every nineteen years, the first day of each month in the same lunar month is generally the same as the solar calendar day or differs by one or two days. Every nineteen years, the dates of the solar terms and the mid-terms are roughly repeated, with individual differences of one or two days. The leap month is repeated or differs by one month every nineteen years. Summary: After reading the above content about the 30th day of the second lunar month, you can refer to it! I hope this article can help you! I also hope to wish you all good health and all the best! |
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