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 |