The summer solstice is the day of the year with the most hours of daylight, and the winter solstice is the day of the year with the fewest hours of daylight. (夏或冬)至;至日
The summer solstice is the day of the year with the most hours of daylight, and the winter solstice is the day of the year with the fewest hours of daylight. (夏或冬)至;至日