Did 1952 have a leap fifth month?
Yes
In our 1952, there was a leap fifth month.
A leap fifth month refers to an additional month added in a leap year, so the leap fifth month is the month added after the lunar fifth month and before the sixth month in a leap year. In the early 21st century, the leap fifth month is the most frequent type of leap month (but it is not fixed, and with the passage of time, the frequency of the leap fifth month will gradually decrease from the highest), usually occurring every 8 or 11 years.
In our 1952, there was a leap fifth month.
A leap fifth month refers to an additional month added in a leap year, so the leap fifth month is the month added after the lunar fifth month and before the sixth month in a leap year. In the early 21st century, the leap fifth month is the most frequent type of leap month (but it is not fixed, and with the passage of time, the frequency of the leap fifth month will gradually decrease from the highest), usually occurring every 8 or 11 years.
Do you know the origin of the leap month?
Why does the lunar calendar have a leap month? —— The lunar calendar uses a leap month to resolve the contradiction between the tropical year and the lunar year.
What is the contradiction between the tropical year and the lunar year? The total length of the tropical year is 365.2422 days, and the length of the synodic month is 29.5306 days.
Twelve synodic months make up a lunar year, which is 29.5306 × 12 = 354.3546 days, which is 10.88 days shorter than the tropical year, nearly 11 days, and each month is short by 0.91 days, nearly 1 day.
Accordingly, if the Spring Festival of a certain lunar year is in the cold winter, the next year's Spring Festival will be 11 days earlier in the season, and the 16th lunar year will appear in the hot summer.
If thirteen synodic months are used to form a lunar year, its length is 29.5306 × 13 = 383.8978 days, which is more than the tropical year by over 18 days.
If the above regulations are used to establish a calendar, there would be strange phenomena where the seasons do not match the calendar, and the sequence of time would be confused and reversed —— this is the contradiction.
In order to overcome this drawback, our ancestors found the "leap month" method based on astronomical observations, ensuring that the first to third months of the lunar year are spring, the fourth to sixth months are summer, the seventh to ninth months are autumn, and the tenth to twelfth months are winter, while also ensuring that the start of the lunar year is at the end of winter and the beginning of spring.
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What is the contradiction between the tropical year and the lunar year? The total length of the tropical year is 365.2422 days, and the length of the synodic month is 29.5306 days.
Twelve synodic months make up a lunar year, which is 29.5306 × 12 = 354.3546 days, which is 10.88 days shorter than the tropical year, nearly 11 days, and each month is short by 0.91 days, nearly 1 day.
Accordingly, if the Spring Festival of a certain lunar year is in the cold winter, the next year's Spring Festival will be 11 days earlier in the season, and the 16th lunar year will appear in the hot summer.
If thirteen synodic months are used to form a lunar year, its length is 29.5306 × 13 = 383.8978 days, which is more than the tropical year by over 18 days.
If the above regulations are used to establish a calendar, there would be strange phenomena where the seasons do not match the calendar, and the sequence of time would be confused and reversed —— this is the contradiction.
In order to overcome this drawback, our ancestors found the "leap month" method based on astronomical observations, ensuring that the first to third months of the lunar year are spring, the fourth to sixth months are summer, the seventh to ninth months are autumn, and the tenth to twelfth months are winter, while also ensuring that the start of the lunar year is at the end of winter and the beginning of spring.
Fate often brings happiness and misfortune to you at the same time. Do you want to know whether you are lucky or unfortunate? Click on the following excellent calculation to predict your fate.
