When is the autumn harvest?

The autumn harvest is on September 22-24 of the Gregorian calendar every year. Autumn harvest means harvesting crops in autumn. The autumn harvest season is usually around the vernal equinox of the lunar calendar. The vernal equinox is the sixteenth of the twenty-four solar terms, which is basically interpreted as harvesting crops in autumn. Also refers to crops harvested in autumn. For example, Zhao Shuli's "Pan Yongfu, a doer": "1960 During the autumn harvest season, all water conservancy infrastructure sites should reduce part of their labor force and go to the countryside for the autumn harvest." The origin of autumn harvest: from Xunzi written by Zhao Xunzi in the Warring States Period over the weekend, "Plow in summer and store the autumn harvest in winter, without losing at four o'clock." Start in spring, grow in summer, harvest in autumn and store in winter. We should grasp the time of all seasons.