【今日夏至】夏至，一般是在6月20日到22日之间，是二十四节气的第十个节气。这一天，太阳直射北回归线，北半球迎来全年白昼最长、黑夜最短的时刻。此时午后易现雷阵雨，需抓紧灌溉、除草防虫。夏至承载古人观天智慧，标志着盛夏的序幕，蕴含“阴阳转换”的自然哲学。

The Summer Solstice, typically falling between June 20 and 22, is the 10th solar term in the traditional Chinese lunisolar calendar. On this day, the sun reaches its northernmost point, bringing the Northern Hemisphere its longest daylight and shortest night of the year.

This peak of light often brings afternoon thunderstorms, where "rain falls on one field while sunshine bathes the next." It also marks a new agricultural cycle, as farmers begin irrigation, weeding and pest control while crops near maturity.

Rooted in ancient astronomical wisdom, the Summer Solstice is the prelude to midsummer and embodies the natural philosophy of the "yin-yang shift" in the cosmic balance of energies. http://t.cn/A6D7Vkat