What is the starting point of each year?

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Ant New Village 202 1 Year 65438+February 2 1 Day Question Answers Sharing

Questions and answers

The ancients determined 24 solar terms a year through astronomical observation, and the starting point of each year was.

Solstice of winter.

problem analysis

When the sun shadow is observed by standard, it becomes very long near the winter solstice, so the daily variation of the sun shadow will be more obvious. The closer we get to the summer solstice, the shorter the shadow is, and the daily variation is actually very small, which is easy to produce errors, so we choose the winter solstice as the starting point.