Traditional Culture Encyclopedia - The 24 Solar Terms - When is the sunrise on the summer solstice? Brief introduction of sunrise time of summer solstice solar terms.
When is the sunrise on the summer solstice? Brief introduction of sunrise time of summer solstice solar terms.
2. Given the latitude a of the point where the sun shines directly on the earth, find the sunrise time of any point on the earth (known latitude b) and get a formula: t = 12 * arccos (TGA * TGB)/π (applicable to the northern hemisphere).
3. According to the calculation, summer solstice: the direct point of the sun is also on the tropic of cancer, a = b = 23 26', t = 5.28 is brought into the formula, and the sunrise time is 5: 00 am16: 48. Sunrise time and sunset time are symmetrical at noon 12, so the sunset time from summer to morning is 6: 43 pm12 seconds.
The time of sunrise and sunset will change with the seasons and latitudes in different places. The summer solstice is the longest day and the shortest night in the northern hemisphere. Most people intuitively think that the sunrise time from summer solstice is also the earliest in a year, and the sunset time is the latest. But in fact, the earliest sunrise usually occurs in the early June before the summer solstice, and the latest sunset is from the end of June to the beginning of July after the summer solstice.
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