What day is the first day of May?

The first day of May is the summer solstice.

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Summer solstice is one of the 24 solar terms. Every year on June 2 1 or 22 of Gregorian calendar, the sun moves to 90 degrees of the yellow meridian, which is the summer solstice. At this time, the position of the sun directly on the ground reaches the northernmost point of the year, almost directly on the Tropic of Cancer, and the sunshine time in the northern hemisphere is the longest.

The solstice in summer is in mid-May. Summer is the biggest and most extreme, everything grows and flourishes here to the extreme, and the sun is also the most extreme, so it is the shortest night and the longest day in a year, which is a white night close to the extreme and the most poetic day in a year.

The ancients in China divided the summer solstice into three periods: the first period was when the antlers were released, the second period was when cicadas began to sing, and the third period was when Pinellia ternata was born. Summer solstice is also an important traditional folk festival "Summer solstice Festival". Folk customs include offering sacrifices to gods and ancestors, avoiding summer, eating noodles and zongzi.

However, the summer solstice is not hot, but the summer solstice is midnight. "Although the summer solstice indicates that the hot summer has arrived, it is not the hottest time yet. After the summer solstice, the temperature will continue to rise for some time, and about twenty or thirty days is the hottest weather.