Just after the Spring Festival holiday, many netizens have begun to look forward to the arrival of next year's Spring Festival. Flipping through the calendar, many people were surprised to find that in the next 5 consecutive years, the Chinese New Year's Eve will be "absent". Wang Yumin, an expert at the Beijing Ancient Observatory, explained that this is related to the large and small months of the lunar calendar.
The calendar shows that the Chinese New Year's Eve for the next 5 years is: January 28, 2025, February 16, 2026, February 5, 2027, January 25, 2028 and February 12, 2029, all of which are the twenty-ninth of the Lunar New Year.
This is a coincidence brought about by the big and small months of the lunar calendar. Wang Yumin explained that the lunar calendar defines the months according to the cycle of the moon's waxing and waning. The day of the month when the moon is completely invisible is designated as the first day of the lunar month, called "Shuo", and the day when the full moon is seen is called "wang". From "Shuo" to "Wang" and then to "Shuo", it is a complete cycle, that is, "synodic month", with an average period of a little more than 29 and a half days. However, the number of days in a month is expressed as an integer, so it is stipulated that the big month is 30 days and the small month is 29 days.
The Moon's orbit around the Earth is elliptical, with speeds fluctuating between speed and speed. The lunar calendar may be a big month for several months in a row, or it may be a small month for several months in a row. Wang Yumin said that by 2050, a total of 12 wax moons will be small moons, and Chinese New Year's Eve will be the 29th of the big year; The 14 wax months are the big moons, and there are Chinese New Year's Eve. "No matter what day Chinese New Year's Eve falls on, it has nothing to do with good luck and bad luck, and it does not affect people to say goodbye to the old and welcome the new. ”