What's the date of the long summer this year?

May 6, 2023. Long summer is the seventh solar term among the twenty-four solar terms and the first solar term in summer. The festival is held on May 5-7 of the Gregorian calendar every year. The long summer in 2023 is May 6th.

The twenty-four solar terms in China are beginning of spring, rain, sting, vernal equinox, Qingming, Grain Rain, Long Summer, Xiaoman, Mangzhong, Summer Solstice, Great Summer, Slight Summer, beginning of autumn, Early Summer, Millennium, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold.