Timeline for Does the sun's rising/setting angle change every few months?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Jun 12, 2023 at 12:34 | comment | added | RonJohn | I noticed this at my old house, where the front window pointed due east. You couldn't watch TV during the day at some times of the year without closing the blinds. | |
| Jan 12, 2023 at 15:13 | history | edited | JohnHoltz | CC BY-SA 4.0 |
clarified that declination changes because of Earth's axial tilt.
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| Nov 6, 2020 at 2:17 | comment | added | Ellesedil | I love the math. But, based on the text of the question (and more specifically, how the question sounds), I'm not sure you've made it easily and explicitly clear that the sun rises and sets at a different point because of the combination of the earth's tilt and the position of the earth along the sun's orbit. You kind of just dove right in to the details, but the details might not make sense to someone who hasn't made the high-level connection yet. It kind of seems like most of the answers so far suffer from this. | |
| Nov 5, 2020 at 10:32 | comment | added | prl | It’s interesting that this formula directly shows that on the equinoxes the sun sets due west everywhere on earth, except at the poles, where it doesn’t set—the formula is undefined. | |
| Nov 5, 2020 at 0:34 | comment | added | Eric Duminil | Indeed. As far as I can tell, this is just a conversion between equatorial and altazimuth coordinates. One way to visualize it is to launch Stellarium and to enable the equatorial grid. It's easy to see where +23.5 and -23.5 intersect the horizon. By playing with the latitude of the obverver, we see how the equatorial grid rotates relative to the horizon, and how the intersections gets further apart when close to the poles. | |
| Nov 4, 2020 at 17:13 | history | answered | JohnHoltz | CC BY-SA 4.0 |