Yushui

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Solar term
 Longi-
tude
 
  Term   Calendar
Spring
315° Lichun Feb.4-5
330° Yushui Feb.4-19
345° Jingzhe Mar. 5-6
Chunfen Mar.20-21
15° Qingming Apr.4-5
30° Guyu Apr.20-21
Summer
45° Lixia May 5-6
60° Xiaoman May 21-22
75° Mangzhong Jun.5-6
90° Xiazhi Jun.5-22
105° Xiaoshu Jul.7-8
120° Dashu Jul.22-23
Autumn
135° Liqiu Aug.7-8
150° Chushu Aug.23-24
165° Bailu Sep.7-8
180° Qiufen Sep.7-24
195° Hanlu Oct.8-9
210° Shuangjiang Oct.23-24
Winter
225° Lidong Nov.7-8
240° Xiaoxue Nov.22-23
255° Daxue Dec.7-8
270° Dongzhi Dec.21-22
285° Xiaohan Jan.5-6
300° Dahan Jan.20-21

The traditional East Asian calendars divide a year into 24 solar terms (節氣). Yǔshuǐ (pīnyīn) or Usui (rōmaji) (Chinese and Japanese: 雨水; Korean: 우수; Vietnamese: Vũ thủy; literally: "rain water") is 2nd solar term. It begins when the Sun reaches the celestial longitude of 330° and ends when it reaches the longitude of 345°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 330°. In Gregorian calendar, it usually begins around February 18 (February 19 East Asia time) and ends around March 5.

[edit] Pentads

Date and Time (UTC)
year begin end
辛巳 2001-Feb-18 14:27 2001-Mar-05 12:32
壬午 2002-Feb-18 20:13 2002-Mar-05 18:27
癸未 2003-Feb-19 02:00 2003-Mar-06 00:04
甲申 2004-Feb-19 07:50 2004-Mar-05 05:55
乙酉 2005-Feb-18 13:31 2005-Mar-05 11:45
丙戌 2006-Feb-18 19:25 2006-Mar-05 17:28
丁亥 2007-Feb-19 01:08 2007-Mar-05 23:18
戊子 2008-Feb-19 06:49 2008-Mar-05 04:58
己丑 2009-Feb-18 12:46 2009-Mar-05 10:47
庚寅 2010-Feb-18 18:35 2010-Mar-05 16:46

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 Yushui including:

China
  • First pentad: 獺祭魚
  • Second pentad: 鴻雁來
  • Last pentad: 草木萌動
Japan
  • First pentad: 土脉潤起
  • Second pentad: 霞始靆
  • Last pentad: 草木萠動


Preceded by
Lichun (立春)
Solar term (節氣) Succeeded by
Jingzhe (驚蟄)