The traditional East Asian calendars divide a year into 24 solar terms. Dàxuě, Taisetsu, Daeseol, or Đại tuyết (Chinese and Japanese: 大雪; pinyin: dàxuě; rōmaji: taisetsu; Korean: 대설; romaja: daeseol; Vietnamese: đại tuyết; "major snow") is the 21st solar term. It begins when the Sun reaches the celestial longitude of 255° and ends when it reaches the longitude of 270°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 255°. In the Gregorian calendar, it usually begins around 7 December and ends around 21 December (22 December East Asia time).
Pentads
- 鶡旦不鳴, 'The jie-bird ceases to crow': the jie is a bird, similar to the pheasant, which is believed to be aggressive and combatant. As winter progresses, even this active bird slows and ceases to crow.
- 虎始交, 'Tigers begin to mate'
- 荔挺生
Date and Time (UTC)
| year | begin | end |
| 辛巳 |
2001-12-07 01:28 |
2001-12-21 19:21 |
| 壬午 |
2002-12-07 07:14 |
2002-12-22 01:14 |
| 癸未 |
2003-12-07 13:05 |
2003-12-22 07:03 |
| 甲申 |
2004-12-06 18:48 |
2004-12-21 12:41 |
| 乙酉 |
2005-12-07 00:32 |
2005-12-21 18:34 |
| 丙戌 |
2006-12-07 06:26 |
2006-12-22 00:22 |
| 丁亥 |
2007-12-07 12:14 |
2007-12-22 06:07 |
| 戊子 |
2008-12-06 18:02 |
2008-12-21 12:03 |
| 己丑 |
2009-12-06 23:52 |
2009-12-21 17:46 |
| 庚寅 |
2010-12-07 05:38 |
2010-12-21 23:38 |
| 辛卯 |
2011-12-07 11:29 |
2011-12-22 05:30 |
| 壬辰 |
2012-12-06 17:18 |
2012-12-21 11:11 |
| 癸巳 |
2013-12-06 23:08 |
2013-12-21 17:11 |
| 甲午 |
2014-12-07 05:04 |
2014-12-21 23:03 |
Source: JPL Horizons On-Line Ephemeris System