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Lìxià, Rikka, Ipha, or Lập hạ is the 7th solar term according to the traditional East Asian calendars, which divide a year into 24 solar terms (節氣). It signifies the beginning of summer in East Asian cultures.

Lixia
Chinese name
Chinese立夏
Literal meaningstart of summer
Vietnamese name
Vietnamese alphabetlập hạ
Chữ Hán立夏
Korean name
Hangul
입하
Hanja
立夏
Japanese name
Kanji立夏
Hiraganaりっか
Solar term
  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

It begins when the Sun reaches the celestial longitude of 45° and ends when it reaches the longitude of 60°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 45°. In the Gregorian calendar, it usually begins around May 5 and ends around May 21.

Date and timeEdit

Date and Time (UTC)
year begin end
辛巳 2001-05-05 10:44 2001-05-20 23:44
壬午 2002-05-05 16:37 2002-05-21 05:29
癸未 2003-05-05 22:10 2003-05-21 11:12
甲申 2004-05-05 04:02 2004-05-20 16:59
乙酉 2005-05-05 09:52 2005-05-20 22:47
丙戌 2006-05-05 15:30 2006-05-21 04:31
丁亥 2007-05-05 21:20 2007-05-21 10:11
戊子 2008-05-05 03:03 2008-05-20 16:00
己丑 2009-05-05 08:50 2009-05-20 21:51
庚寅 2010-05-05 14:44 2010-05-21 03:33
辛卯 2011-05-05 20:23 2011-05-21 09:21
壬辰 2012-05-05 02:19 2012-05-20 15:15
癸巳 2013-05-05 08:18 2013-05-20 21:09
甲午 2014-05-05 13:59 2014-05-21 02:59
Source: JPL Horizons On-Line Ephemeris System
Preceded by
Guyu (穀雨)
Solar term (節氣) Succeeded by
Xiaoman (小滿)