| 11. | The exact instant of solar noon, when the sun reaches its highest elevation in the sky, varies with the seasons.
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| 12. | Even on the equator, sunrise and sunset shift several minutes back and forth through the year, along with solar noon.
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| 13. | A common recommendation for residential dwellings is to place living areas facing solar noon and sleeping quarters on the opposite side.
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| 14. | The daily motion of the sun across the sky also introduces errors, greatest at the sunrise and sunset and smallest at solar noon.
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| 15. | Observing the sun from earth, the "'solar hour angle "'is an expression of time, expressed in angular measurement, usually degrees, from solar noon.
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| 16. | The 47-degree difference in the altitude of the sun at solar noon between winter and summer forms the basis of passive solar design.
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| 17. | As an example, if you have several panels in a row from east to west, there will be no shading during solar noon.
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| 18. | On the equator, the sun will be straight overhead and a vertical stick will cast no shadow at solar noon on the equinoxes.
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| 19. | Everything I say is true both for local solar noon and for the midpoint between sunrise and sunset, although those do not exactly coincide.
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| 20. | The various sun photometers, radiometers and cameras on the table are used every day at solar noon when the sun is not blocked by clouds.
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