When is the winter solstice dawn and darkness?

As we know, dawn and darkness are actually affected by the length of time the sun shines on the earth. In winter, the sun shines almost directly on the tropic of Capricorn, so the length of day and night in the northern hemisphere will change. Generally, the days are short and the nights are long. Until the solstice of winter, the day is the shortest and the night is the longest. In winter solstice, the sunrise time is 7: 33 in the morning and the sunset time is 16: 53 in the evening. The winter solstice has the shortest day and the longest night in all parts of the northern hemisphere. The shorter the day, the extreme night phenomenon appears in the Arctic. From winter to the sun, the sun shines directly on the Tropic of Capricorn, and the sun is most inclined to the northern hemisphere, and the solar altitude angle is the smallest. The solstice in winter is the turning point when the direct point of the sun returns to the north. After this day, it went back, and the direct point of the sun began to move northward from the tropic of Capricorn, and the days in the northern hemisphere became longer day by day.

The time of sunrise will change with the season and the latitude of different places. Traditionally, in the northern hemisphere, the sunrise time from winter solstice is the latest, but in fact, the latest sunrise time should be 65438+1early October. By the same token, the earliest sunrise on the solstice is not in summer, but in mid-June. Even in the equatorial region, the time of sunrise and sunset will change a little during the year. In fact, for most parts of the earth except the equator and poles, the earliest day of sunrise is before the summer solstice, the latest day of sunset is after the summer solstice, the earliest day of sunset is before the winter solstice, and the latest day of sunrise is after the winter solstice.