Editing Talk:2792: Summer Solstice

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Related to [[1878: Earth Orbital Diagram]]? [[User:Purah126|Purah126]] ([[User talk: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. ;) [[Special:Contributions/172.70.85.92|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. - [[User:Frankie|Frankie]] ([[User talk:Frankie|talk]]) 02:06, 22 June 2023 (UTC)

:Wouldn’t that cause a lot of trouble with stuff like crop growth patterns? —[[User:Purah126|Purah126]] ([[User talk: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). [https://www.timeanddate.com/astronomy/equation-of-time.html]. 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. --[[Special:Contributions/172.70.111.153|172.70.111.153]] 14:27, 22 June 2023 (UTC)

:I think elliptical orbit with the Sun at the center is not stable. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 23:05, 22 June 2023 (UTC)

::Yes but he has an engine. --[[Special:Contributions/172.70.115.64|172.70.115.64]] 13:53, 24 June 2023 (UTC)

While we're at it, can we please make the year, lunar phase period, and day neat ratios of one another? [[Special:Contributions/172.69.247.44|172.69.247.44]] 13:52, 22 June 2023 (UTC)

:I'll email someone at NASA about it, don't worry. [[explain_xkcd:Community_portal/Miscellaneous#Help_with_Creating_a_User_Page|Trogdor147]] ([[explain_xkcd:Community_portal/Miscellaneous#Help_with_Creating_a_User_Page|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. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 21:51, 22 June 2023 (UTC)
::Definitely 360, it would nicely match there being 3600 seconds in hour. Also, the bigger change you would do the worse effect would it have on biosphere. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 23:07, 22 June 2023 (UTC)
:::Why? There would only be a small lengthening of the day (~1.5%), presuming the actual time length of the year is the same. BTW, do flatearthers call it a biodisc? [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 01:00, 23 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?[[Special:Contributions/141.101.98.20|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. [[Special:Contributions/172.68.35.28|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? [[Special:Contributions/162.158.186.169|162.158.186.169]] 16:41, 22 June 2023 (UTC)

Great Randal[l]s think alike... I had just posted [https://www.facebook.com/merlyn/posts/pfbid027XNEX93Yud8iU8LYbmvtw6B7QwSBfYJhkmMpaza3DXM6HENxTmuz623FhyzL5aQAl this to Facebook] a day before seeing Randall's work. [[User:RandalSchwartz|RandalSchwartz]] ([[User talk:RandalSchwartz|talk]]) 04:45, 23 June 2023 (UTC)

ALTER EARTH'S ORBIT AND TILT - STOP GLOBAL DISASTERS AND EPIDEMICS<br>
ALTER THE SOLAR SYSTEM. REORBIT VENUS INTO A NEAR EARTH-LIKE ORBIT<br>
TO CREATE A BORN AGAIN EARTH (1990)<br>
-- Alexander Abian<br>
[[User:BunsenH|BunsenH]] ([[User talk: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? [[User:Ansarya|Ansarya]] ([[User talk: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''. [[Special:Contributions/172.69.79.159|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. :) [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 06:45, 24 June 2023 (UTC)

I'm pretty sure this fix is not right: "making the solstices match the days of closest or furthest distance from the Sun (perihelion or aphelion)".  The axial tilt makes the length of a solar day longer at both the summer and winter solstices (a preceding paragraph of the explanation has that right).  To balance this out by just changing the orbit, we need the Earth to be moving most slowly (which would normally be when it is furthest from the sun) at _both_ solstices.  So it wouldn't work to have one solstice be perihelion and the other by aphelion.  I think it is really the speed of the Earth that needs to be changed, and normally that is based on distance from the Sun, but not if you have an engine capable of altering it.  So, if Randall wanted to maintain the axial tilt and thus the solistices, I think he would need to be continuously operating his engine in order to make the Earth's speed slower at the solstices and faster at the equinoxes. --[[Special:Contributions/172.70.110.60|172.70.110.60]] 14:02, 24 June 2023 (UTC)
@@ Line 40: / Line 40: @@
 I'm pretty sure this fix is not right: "making the solstices match the days of closest or furthest distance from the Sun (perihelion or aphelion)".  The axial tilt makes the length of a solar day longer at both the summer and winter solstices (a preceding paragraph of the explanation has that right).  To balance this out by just changing the orbit, we need the Earth to be moving most slowly (which would normally be when it is furthest from the sun) at _both_ solstices.  So it wouldn't work to have one solstice be perihelion and the other by aphelion.  I think it is really the speed of the Earth that needs to be changed, and normally that is based on distance from the Sun, but not if you have an engine capable of altering it.  So, if Randall wanted to maintain the axial tilt and thus the solistices, I think he would need to be continuously operating his engine in order to make the Earth's speed slower at the solstices and faster at the equinoxes. --[[Special:Contributions/172.70.110.60|172.70.110.60]] 14:02, 24 June 2023 (UTC)
-: Just occurred to me that the comic title is Summer Solstice so maybe he only wants to fix the summer (in Northern hemisphere) solstice and does not care if his fix makes the discrepancy even worse between the winter solstice and latest sunrise  / earliest sunset? --[[Special:Contributions/172.70.114.17|172.70.114.17]] 14:41, 24 June 2023 (UTC)
-Here is a good explanation for the differences between solstices and latest sunset: https://www.timeanddate.com/calendar/june-solstice.html
-I think this is a Frisky Dingo reference to some degree. [[User:Psychoticpotato|Psychoticpotato]] ([[User talk:Psychoticpotato|talk]]) 16:44, 6 May 2024 (UTC)
-:# Quickly looking up {{w|Frisky Dingo}} on Wikipedia, as I never knew about it before now, it says it parodied (supervillain-related, etc) tropes. And xkcd is often parodying that kind of trope. Probably just more a case of both referencing of the same long run of prior 'original' tropes from other (parodying and non-parodying) source material, essentially in parallel. Unless we know Randall has made some direct references to FD before, we can't be certain he's even aware of it.
-:# If you think you have a useful bit of info (maybe not the above, IMO), integrate it properly into the article rather than leave it hanging down here like this. (You could ask if ''anyone else'' thought that "something-or-other might be a refererence to Hoojamaflip", and see if it sparks someone else's agreement, perhaps... In this case, I think it's tenuous, and any response to it might be as above.)
-:# You're leaving seemingly random comments on many explanation Talk Pages, mostly brief and not all adding anything useful... The odd comment, or even an occasional long ramble, could be made judiciously and we'd take note. It's not Pokemon, you don't ''have'' to "catch 'em all". Enthusiasm is good, but don't mistake any old interaction with contribution.
-:Just my opinion (all three points), and I'm not claiming to be an authoritative voice for all, but I hope you at least read/understand what I'm getting at. Whatever you do then. [[Special:Contributions/172.69.195.181|172.69.195.181]] 08:48, 7 May 2024 (UTC)