Guyu
Sixth solar term of traditional East Asian calendars
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The traditional Chinese lunisolar calendar divide a year into 24 solar terms.[1] Gǔyǔ, Kokuu, Gogu, or Cốc vũ is the 6th solar term. It begins when the Sun reaches the celestial longitude of 30° and ends when it reaches the longitude of 45°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 30°. In the Gregorian calendar, it usually begins around April 20 and ends around May 5.
| Guyu | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chinese name | |||||||||||||||||||||||||||||||
| Traditional Chinese | 穀雨 | ||||||||||||||||||||||||||||||
| Simplified Chinese | 谷雨 | ||||||||||||||||||||||||||||||
| Literal meaning | grain rain | ||||||||||||||||||||||||||||||
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| Vietnamese name | |||||||||||||||||||||||||||||||
| Vietnamese alphabet | cốc vũ | ||||||||||||||||||||||||||||||
| Chữ Hán | 穀雨 | ||||||||||||||||||||||||||||||
| Korean name | |||||||||||||||||||||||||||||||
| Hangul | 곡우 | ||||||||||||||||||||||||||||||
| Hanja | 穀雨 | ||||||||||||||||||||||||||||||
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| Japanese name | |||||||||||||||||||||||||||||||
| Kanji | 穀雨 | ||||||||||||||||||||||||||||||
| Hiragana | こくう | ||||||||||||||||||||||||||||||
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| Term | Longitude | Dates |
|---|---|---|
| Lichun | 315° | 4–5 February |
| Yushui | 330° | 18–19 February |
| Jingzhe | 345° | 5–6 March |
| Chunfen | 0° | 20–21 March |
| Qingming | 15° | 4–5 April |
| Guyu | 30° | 20–21 April |
| Lixia | 45° | 5–6 May |
| Xiaoman | 60° | 21–22 May |
| Mangzhong | 75° | 5–6 June |
| Xiazhi | 90° | 21–22 June |
| Xiaoshu | 105° | 7–8 July |
| Dashu | 120° | 22–23 July |
| Liqiu | 135° | 7–8 August |
| Chushu | 150° | 23–24 August |
| Bailu | 165° | 7–8 September |
| Qiufen | 180° | 23–24 September |
| Hanlu | 195° | 8–9 October |
| Shuangjiang | 210° | 23–24 October |
| Lidong | 225° | 7–8 November |
| Xiaoxue | 240° | 22–23 November |
| Daxue | 255° | 7–8 December |
| Dongzhi | 270° | 21–22 December |
| Xiaohan | 285° | 5–6 January |
| Dahan | 300° | 20–21 January |
Traditionally, Guyu marks the beginning of warmer temperatures and the onset of the rainy season, making it an important period for farmers to ensure a satisfactory harvest for the rest of the year.
Pentads
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 Guyu include:
China
Japan
Date and time
| Year | Begin | End |
|---|---|---|
| 辛巳 | 2001-04-20 00:35 | 2001-05-05 10:44 |
| 壬午 | 2002-04-20 06:20 | 2002-05-05 16:37 |
| 癸未 | 2003-04-20 12:02 | 2003-05-05 22:10 |
| 甲申 | 2004-04-19 17:50 | 2004-05-05 04:02 |
| 乙酉 | 2005-04-19 23:37 | 2005-05-05 09:52 |
| 丙戌 | 2006-04-20 05:26 | 2006-05-05 15:30 |
| 丁亥 | 2007-04-20 11:07 | 2007-05-05 21:20 |
| 戊子 | 2008-04-19 16:51 | 2008-05-05 03:03 |
| 己丑 | 2009-04-19 22:44 | 2009-05-05 08:50 |
| 庚寅 | 2010-04-20 04:29 | 2010-05-05 14:44 |
| 辛卯 | 2011-04-20 10:17 | 2011-05-05 20:23 |
| 壬辰 | 2012-04-19 16:12 | 2012-05-05 02:19 |
| 癸巳 | 2013-04-19 22:03 | 2013-05-05 08:18 |
| 甲午 | 2014-04-20 03:55 | 2014-05-05 13:59 |
| 乙未 | 2015-04-20 09:41 | 2015-05-05 19:52 |
| 丙申 | 2016-04-19 15:29 | 2016-05-05 01:41 |
| 丁酉 | 2017-04-19 21:27 | 2017-05-05 07:31 |
| 戊戌 | 2018-04-20 03:12 | 2018-05-05 13:25 |
| 己亥 | 2019-04-20 08:55 | 2019-05-05 19:02 |
| 庚子 | 2020-04-19 14:45 | 2020-05-05 00:51 |
| 辛丑 | 2021-04-19 20:33 | 2021-05-05 06:47 |
| 壬寅 | 2022-04-20 02:24 | 2022-05-05 12:25 |
| 癸卯 | 2023-04-20 08:13 | 2023-05-05 18:18 |
| 甲辰 | 2024-04-19 13:59 | 2024-05-05 00:10 |
| 乙巳 | 2025-04-19 19:56 | 2025-05-05 05:57 |
| 丙午 | 2026-04-20 01:39 | 2026-05-05 11:48 |
| 丁未 | 2027-04-20 07:17 | 2027-05-05 17:25 |
| 戊申 | 2028-04-19 13:09 | 2028-05-04 23:12 |
| 己酉 | 2029-04-19 18:55 | 2029-05-05 05:07 |
| 庚戌 | 2030-04-20 00:43 | 2030-05-05 10:46 |
| Source: JPL Horizons On-Line Ephemeris System | ||