What is Xiao Yue Da Yue?
In daily life, we often hear the words "small moon" and "big moon", but what do they refer to specifically? Why do some months have 30 days and others have 31 days? This article will answer these questions in detail for you, and attach the hot topics and hot content on the Internet in the past 10 days to help you better understand this phenomenon.
1. Definition of small moon and big moon
Small months and big months are divided according to the number of days in the month. Specifically:
| month type | days | months included |
|---|---|---|
| Otsuki | 31 days | January, March, May, July, August, October, December |
| Satsuki | 30 days | April, June, September, November |
| special months | 28 days or 29 days | February (28 days in ordinary years, 29 days in leap years) |
As can be seen from the table, the big month has 7 months, the small month has 4 months, and February is a special month whose number of days will change depending on whether it is a leap year.
2. Why are there small moons and big moons?
The division of small and large months originated from the ancient Roman calendar. The earliest Roman calendar only had 10 months, and later two months were added to form a 12-month calendar. Roman rulers adjusted the number of days in the month to match the Earth's orbit around the sun (approximately 365.25 days). For example, in honor of the Roman Emperor Augustus, August was named "August" and changed from 30 days to 31 days to match the number of days in July (July, in honor of Caesar).
3. Hot topics on the Internet in the past 10 days
The following are some hotly discussed topics on the Internet in the past 10 days for your reference:
| hot topics | heat index | Main discussion content |
|---|---|---|
| New breakthroughs in AI technology | ★★★★★ | Application of artificial intelligence in medical, education and other fields |
| world cup qualifiers | ★★★★☆ | Performance and promotion status of teams from various countries |
| climate change summit | ★★★☆☆ | Response to global warming |
| celebrity gossip | ★★★☆☆ | A well-known actor’s love affair exposed |
4. How to remember Xiao Yue and Da Yue?
There are many ways to remember Xiaoyue and Dayue. Here are a few common methods:
1.fist memory method: Use the raised joints and concave parts of the fist to remember. The convex joint represents the big month (31 days), and the concave part represents the small month (30 days). February alone memory.
2.formula memory method: For example, "135780 is the twelfth lunar month, thirty-one days are never different; 469 is the 30th day of winter, and it is the 28th day of the second lunar month in ordinary years." The "December" here refers to December, and "winter" refers to November.
5. The cultural significance of the small moon and the big moon
The Little Moon and the Big Moon are not only part of the calendar, they also have a profound influence in culture. For example, some traditional festivals organize activities according to the number of days in the month. In addition, farmers also arrange farming activities according to the number of days in the month.
6. Summary
The division of small months and large months is an important concept in the calendar. Understanding their definition and origin can help us better grasp time. At the same time, combined with recent hot topics across the Internet, we can also see the close connection between time and social life. I hope this article can help you understand Xiaoyue and Oyue more clearly.
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