Talk:2792: Summer Solstice
Related to 1878: Earth Orbital Diagram? Purah126 (talk) 00:32, 22 June 2023 (UTC)
- Great minds think alike*. Hadn't read down here when I leapt in and added that link (and made some other very minor tweaks). Or at least leapt in once I'd found it myself (not rembering its title or enough of its keywords), having had to trawl through Category:Astronomy and visit almost all likely titles and several unlikely ones. Which was enjoyable, so not a problem. ;) 172.70.85.92 00:58, 22 June 2023 (UTC) * - fools never differ... :P
I think there's a 3rd option for what the "fix" entails: eliminating Earth's axial tilt so it's always equinox (12 hour days almost everywhere, perpetual dawn at the poles). The title text specifies "on the equator", not "near" the equator. The only way for eclipses always "on" the equator is if the equator is always aligned with the ecliptic. - Frankie (talk) 02:06, 22 June 2023 (UTC)
- Wouldn’t that cause a lot of trouble with stuff like crop growth patterns? —Purah126 (talk) 16:58, 22 June 2023 (UTC)
I think that to make the solstices match the earliest sunrise/sunset might require straightening out the Earth's tilt as well. Making it a circular orbit I think actually makes the summer solstice even further from the latest sunset (but the winter solstice closer to latest sunrise). [1]. Oh but straightening the tilt would mean no more solstices at all, hm. Maybe what's required is an elliptical orbit but with the sun at the center rather than a focus. --172.70.111.153 14:27, 22 June 2023 (UTC)
- I think elliptical orbit with the Sun at the center is not stable. -- Hkmaly (talk) 23:05, 22 June 2023 (UTC)
While we're at it, can we please make the year, lunar phase period, and day neat ratios of one another? 172.69.247.44 13:52, 22 June 2023 (UTC)
- I'll email someone at NASA about it, don't worry. Trogdor147 (talk) 20:54, 22 June 2023 (UTC)
- Should we make it 360 days/year (360 is a highly composite number) or should we go with 400, for easy multiples? Either then means we have to redefine the length of the week. I'm OK with 50 eight-day weeks. I propose the new day to be called Randallday. SDSpivey (talk) 21:51, 22 June 2023 (UTC)
- Will we get a vote on whether the moon orbit is 'fixed' to give us total eclipses, annular, or a mix of both?141.101.98.20 08:39, 23 June 2023 (UTC)
Anyone have any What If? type insights about any unintended consequences of the proposed changes? Thinking more of the physical and natural rather than societal, but anything might be an interesting addition to the article. 172.68.35.28 14:58, 22 June 2023 (UTC)
- Tides, possibly ocean currents. Need a physicist for details (I'm a marine biologist; tides are on my radar, tide modeling isn't), but regularization of Earth and Moon orbits would remove many of the gravitational drivers of things like "spring" and "neap" tides, leading (it sez here) to permanent changes to littoral zones and their biotas, and (ditto) impacting coastal zone management strategies, especially if the "new normal" (and consistent) tides were much higher or lower than previous means. Arguably, an ocean biosphere already under stress from global warming would resent having to put up with yet another anthropogenic set of challenges. Hm? 162.158.186.169 16:41, 22 June 2023 (UTC)
Great Randal[l]s think alike... I had just posted this to Facebook a day before seeing Randall's work. RandalSchwartz (talk) 04:45, 23 June 2023 (UTC)
ALTER EARTH'S ORBIT AND TILT - STOP GLOBAL DISASTERS AND EPIDEMICS
ALTER THE SOLAR SYSTEM. REORBIT VENUS INTO A NEAR EARTH-LIKE ORBIT
TO CREATE A BORN AGAIN EARTH (1990)
-- Alexander Abian
BunsenH (talk) 17:56, 23 June 2023 (UTC)
So, "six days" does that mean June 28th, 2023 is the latest sunset of the year? I'm kind of shocked that there's not already a citation here showing this fact (if that's the actual day). Anyone? Ansarya (talk) 21:54, 23 June 2023 (UTC)
- It may change according to the place. According to some ephemera, I have at hand, Edinburgh (Scotland) has its earliest sunrise on 18th June, latest sunset on 24th June. London (England) 17th and 25th June, respectively. Pittsburgh (PA) is 14th and 27th/28th. Milan (Italy) 15th/16th and 26th/27th, etc. Both latitude (effecting the moment the Sun's path dips below the horizon) and longitude (how the exactly cyclic patterns cross the shifted day/night cycle) interact. Which means that it's highly dependent on where the xkcd characters are. 172.69.79.159 23:01, 23 June 2023 (UTC)
Yup, total news to me that the summer solstice isn't both the earliest sunrise and latest sunset. :) NiceGuy1 (talk) 06:45, 24 June 2023 (UTC)
