闰月与中气

依据中气设置闰月

一、规则

中文：
农历规定：每个正常月份必须有一个中气。
如果某个农历月没有中气，这个月就定为闰月。

English:
According to the traditional Chinese calendar rule:
Each normal lunar month must contain one middle solar term (zhongqi).
If a lunar month has no middle solar term, it becomes an intercalary month (leap month).

 

二、例子（以闰二月为例）

中文：

- 农历二月：有中气「春分」→ 正常二月
- 下一个农历月：只有节气「清明」，没有中气
→ 这个月不叫三月，而叫 闰二月

English:

- Lunar month 2: has middle solar term Spring Equinox → normal 2nd month
- Next lunar month: only has solar term Pure Brightness, no middle solar term
→ This month is not called month 3, but Leap Second Month (Run Eryue)

 

三、目的

中文：
协调农历月相和四季，让农历和季节不会错位。

English:
To align the lunar calendar with the solar year and keep the calendar in step with seasons.

什么是中气｜Zhongqi (Middle Qi)

中文

二十四节气里，排在偶数位的 12 个，叫「中气」。
它们是用来定月份、定四季的关键节点。

English

Among the 24 Solar Terms, the 12 even-positioned ones are called
Middle Solar Terms (Zhongqi).
They are used to fix lunar months and seasons.

 

12 个中气列表（中英对照）

1. 雨水　Yushui → Rain Water
2. 春分　Chunfen → Spring Equinox
3. 谷雨　Guyu → Grain Rain
4. 小满　Xiaoman → Grain Buds
5. 夏至　Xiazhi → Summer Solstice
6. 大暑　Dashu → Major Heat
7. 处暑　Chushu → End of Heat
8. 秋分　Qiufen → Autumn Equinox
9. 霜降　Shuangjiang → Frost’s Descent
10. 小雪　Xiaoxue → Minor Snow
11. 冬至　Dongzhi → Winter Solstice
12. 大寒　Dahan → Major Cold

一节一气为一月，
每个月必须有一个中气，
没有中气的那个月 → 就是闰月。

One solar term + one middle qi = one month.
Every normal month must have one middle qi.
A month without a middle qi → becomes a leap month.