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The Great Heat

"The Great Heat" is the 12th solar term in the 24 solar terms. The northern hemisphere is between July 22 and July 24, and the southern hemisphere is between January 20 and January 21 each year, begins when the Sun reaches the celestial longitude of 120° and ends when it reaches the longitude of 135°. During this period, clear skies, hot ground, baking the atmosphere, so that the temperature remains high, most areas of the temperature of 35 degrees or more. At the same time, where the crops grow fastest and the most frequent time for drought, waterlogging and windy weather. After this day, soil gets more and more humid and heavy thunderstorm comes from time to time. Heavy rain weakened the heat, the weather began to transition to the beginning of autumn.

 

 

大暑

 

大暑,二十四节气之一,北半球在每年7月22-24日之间,南半球在每年1月20-21日之间,太阳位于黄经120°。

 

《月令七十二候集解》中说:“暑,热也,就热之中分为大小,月初为小,月中为大,今则热气犹大也。”其气候特征是:“斗指丙为大暑,斯时天气甚烈于小暑,故名曰大暑。”大暑节气正值“三伏天”里的“中伏”前后,是一年中最热的时期,气温最高,农作物生长最快,同时,很多地区的旱、涝、风灾等各种气象灾害也最为频繁。古代将大暑分为三候:“一候腐草为萤;二候土润溽暑;三候大雨时行。” 世界上萤火虫约有二千多种,分水生与陆生两种,陆生的萤火虫产卵于枯草上,大暑时,萤火虫卵化而出,所以古人认为萤火虫是腐草变成的;第二候是说天气开始变得闷热,土地也很潮湿;第三候是说时常有大的雷雨会出现,大雨使暑湿减弱,天气开始向立秋过渡。

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Uploaded on July 23, 2017
Taken on May 26, 2017