The traditional Chinese calendar divides a year into 24 solar terms.[1] Dàshǔ (Chinese: 大暑; pinyin: dàshǔ), Taisho, Daeseo, or Đại thử (Chinese and Japanese: 大暑; pinyin: dàshǔ; rōmaji: taisho; Korean: 대서; romaja: daeseo; Vietnamese: đại thử; "major heat") is the 12th solar term. It begins when the Sun reaches the celestial longitude of 120° and ends when it reaches the longitude of 135°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 120°. In the Gregorian calendar, it usually begins around 22 July (23 July Chinese lunisolar calendar time) and ends around 7 August.
Date and time
Date and Time (UTC)
| Year | 
Begin | 
End
 | 
| 辛巳
 | 
2001-07-22 18:26
 | 
2001-08-07 10:52
 | 
| 壬午
 | 
2002-07-23 00:14
 | 
2002-08-07 16:39
 | 
| 癸未
 | 
2003-07-23 06:04
 | 
2003-08-07 22:24
 | 
| 甲申
 | 
2004-07-22 11:50
 | 
2004-08-07 04:19
 | 
| 乙酉
 | 
2005-07-22 17:40
 | 
2005-08-07 10:03
 | 
| 丙戌
 | 
2006-07-22 23:17
 | 
2006-08-07 15:40
 | 
| 丁亥
 | 
2007-07-23 05:00
 | 
2007-08-07 21:31
 | 
| 戊子
 | 
2008-07-22 10:54
 | 
2008-08-07 03:16
 | 
| 己丑
 | 
2009-07-22 16:35
 | 
2009-08-07 09:01
 | 
| 庚寅
 | 
2010-07-22 22:21
 | 
2010-08-07 14:49
 | 
| 辛卯
 | 
2011-07-23 04:11
 | 
2011-08-07 20:33
 | 
| 壬辰
 | 
2012-07-22 10:00
 | 
2012-08-07 02:30
 | 
| 癸巳
 | 
2013-07-22 15:55
 | 
2013-08-07 08:20
 | 
| 甲午
 | 
2014-07-22 21:41
 | 
2014-08-07 14:02
 | 
| 乙未
 | 
2015-07-23 03:30
 | 
2015-08-07 20:01
 | 
| 丙申
 | 
2016-07-22 09:30
 | 
2016-08-07 01:53
 | 
| 丁酉
 | 
2017-07-22 15:15
 | 
2017-08-07 07:40
 | 
| 戊戌
 | 
2018-07-22 21:00
 | 
2018-08-07 13:30
 | 
| 己亥
 | 
2019-07-23 02:50
 | 
2019-08-07 19:13
 | 
| 庚子
 | 
2020-07-22 08:36
 | 
2020-08-07 01:06
 | 
| 辛丑
 | 
2021-07-22 14:26
 | 
2021-08-07 06:53
 | 
| 壬寅
 | 
2022-07-22 20:07
 | 
2022-08-07 12:29
 | 
| 癸卯
 | 
2023-07-23 01:50
 | 
2023-08-07 18:22
 | 
| 甲辰
 | 
2024-07-22 07:44
 | 
2024-08-07 00:09
 | 
| 乙巳
 | 
2025-07-22 13:29
 | 
2025-08-07 05:51
 | 
| 丙午
 | 
2026-07-22 19:13
 | 
2026-08-07 11:42
 | 
| 丁未
 | 
2027-07-23 01:04
 | 
2027-08-07 17:26
 | 
| 戊申
 | 
2028-07-22 06:53
 | 
2028-08-06 23:21
 | 
| 己酉
 | 
2029-07-22 12:42
 | 
2029-08-07 05:11
 | 
| 庚戌
 | 
2030-07-22 18:24
 | 
2030-08-07 10:47
 | 
| Source: JPL Horizons On-Line Ephemeris System
 | 
References