| Longi- tude |
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 (節氣). Chūnfēn (pīnyīn) or Shunbun (rōmaji) (Chinese and Japanese: 春分; Korean: 춘분; Vietnamese: Xuân phân; literally: "vernal equinox") 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).
| year | begin | end |
|---|---|---|
| 辛巳 | 2001-03-20 13:30 | 2001-04-04 17:24 |
| 壬午 | 2002-03-20 19:16 | 2002-04-04 23:18 |
| 癸未 | 2003-03-21 00:59 | 2003-04-05 04:52 |
| 甲申 | 2004-03-20 06:48 | 2004-04-04 10:43 |
| 乙酉 | 2005-03-20 12:33 | 2005-04-04 16:34 |
| 丙戌 | 2006-03-20 18:25 | 2006-04-04 22:15 |
| 丁亥 | 2007-03-21 00:07 | 2007-04-05 04:04 |
| 戊子 | 2008-03-20 05:48 | 2008-04-04 09:45 |
| 己丑 | 2009-03-20 11:43 | 2009-04-04 15:33 |
| 庚寅 | 2010-03-20 17:32 | 2010-04-04 21:30 |
| 辛卯 | 2011-03-20 23:20 | 2011-04-05 03:11 |
| 壬辰 | 2012-03-20 05:14 | 2012-04-04 09:05 |
| 癸巳 | 2013-03-20 11:01 | 2013-04-04 15:02 |
| 甲午 | 2014-03-20 16:57 | 2014-04-04 20:46 |
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:
| Preceded by Jingzhe (驚蟄) |
Solar term (節氣) | Succeeded by Qingming (清明) |