| Chunfen | |||||||||
| Chinese name | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chinese | 春分 | ||||||||
| Literal meaning | vernal equinox | ||||||||
|
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| Vietnamese name | |||||||||
| Vietnamese alphabet | xuân phân | ||||||||
| Chữ Hán | 春分 | ||||||||
| Korean name | |||||||||
| Hangul | 춘분 | ||||||||
| Hanja | 春分 | ||||||||
|
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| Japanese name | |||||||||
| Kanji | 春分 | ||||||||
| Hiragana | しゅんぶん | ||||||||
|
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| Transcriptions | |
|---|---|
| Standard Mandarin | |
| Hanyu Pinyin | chūnfēn |
| Bopomofo | ㄔㄨㄣ ㄈㄣ |
| Transcriptions | |
|---|---|
| Revised Romanization | chunbun |
| Transcriptions | |
|---|---|
| Romanization | shunbun |
| Longitude | Term | Calendar |
|---|---|---|
| Spring | ||
| 315° | Lichun | 4 – 5 February |
| 330° | Yushui | 18–19 February |
| 345° | Jingzhe | 5 – 6 March |
| 0° | Chunfen | 20–21 March |
| 15° | Qingming | 4 – 5 April |
| 30° | Guyu | 20–21 April |
| Summer | ||
| 45° | Lixia | 5 – 6 May |
| 60° | Xiaoman | 21–22 May |
| 75° | Mangzhong | 5 – 6 June |
| 90° | Xiazhi | 21–22 June |
| 105° | Xiaoshu | 7 – 8 July |
| 120° | Dashu | 22–23 July |
| Autumn | ||
| 135° | Liqiu | 7 – 8 August |
| 150° | Chushu | 23–24 August |
| 165° | Bailu | 7 – 8 September |
| 180° | Qiufen | 23–24 September |
| 195° | Hanlu | 8 – 9 October |
| 210° | Shuangjiang | 23–24 October |
| Winter | ||
| 225° | Lidong | 7 – 8 November |
| 240° | Xiaoxue | 22–23 November |
| 255° | Daxue | 7 – 8 December |
| 270° | Dongzhi | 21–22 December |
| 285° | Xiaohan | 5 – 6 January |
| 300° | Dahan | 20–21 January |
The traditional East Asian calendars divide a year into 24 solar terms. Chūnfēn, Shunbun, Chunbun, or Xuân phân is the 4th solar term. It begins when the Sun reaches the celestial longitude of 0° and ends when it reaches the longitude of 15°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 0°. In the Gregorian calendar, it usually begins around 20 March and ends around 4 April (5 April East Asia time).
Source: JPL Horizons On-Line Ephemeris System
Each solar term can be divided into 3 pentads (候). They are: first pentad (初候), second pentad (次候) and last pentad (末候). Pentads in Chunfen include:
A pentad as follows was referred to Japanese traditional calendar presented in a smaller, easy to use, format.