See? The Sun Ain't Have Constant Speed

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Danang

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See? The Sun Ain't Have Constant Speed
« on: November 22, 2022, 01:17:52 PM »
November 22nd, 2022, the Sun DECELERATES for Jakarta, and ACCELERATES for Medellin (approximately 180° of longitude difference from Jakarta).

Is the earth rotation speed changes within 24 hours? 👎

Or

the Sun travels with changing speed within 24 hours? 👍




• South Pole Centered FE Map AKA Phew FE Map
• Downwards Universal Deceleration.

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Danang

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  • Everything will be "Phew" in its time :')
Re: See? The Sun Ain't Have Constant Speed
« Reply #1 on: November 22, 2022, 01:19:12 PM »
The sun is a vehicle with changing speed all the time.

Go phew okay?~
• South Pole Centered FE Map AKA Phew FE Map
• Downwards Universal Deceleration.

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boydster

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Re: See? The Sun Ain't Have Constant Speed
« Reply #2 on: November 22, 2022, 01:21:36 PM »
Check out those altitude numbers

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Danang

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Re: See? The Sun Ain't Have Constant Speed
« Reply #3 on: November 22, 2022, 01:33:57 PM »
Altitude numbers is different BUT the LATITUDE is the same:  6.2° S.

This makes a question: Is the altitudes numbers valid, or can timeanddate.com be a reliable reference?

At least for globe model, it will be disqualified if the day time is different for two locations with the same latitudes.



• South Pole Centered FE Map AKA Phew FE Map
• Downwards Universal Deceleration.

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boydster

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Re: See? The Sun Ain't Have Constant Speed
« Reply #4 on: November 22, 2022, 01:52:38 PM »
Not if the altitudes vary.

Re: See? The Sun Ain't Have Constant Speed
« Reply #5 on: November 22, 2022, 01:54:29 PM »
Altitude numbers is different BUT the LATITUDE is the same:  6.2° S.

This makes a question: Is the altitudes numbers valid, or can timeanddate.com be a reliable reference?

At least for globe model, it will be disqualified if the day time is different for two locations with the same latitudes.

Hey Danang, I see you've been busy with a ruler!  I love what you've done with your flat earth map! Very becoming! At least there is no rodonkulous ice wall to be seen on yours!

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JackBlack

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Re: See? The Sun Ain't Have Constant Speed
« Reply #6 on: November 22, 2022, 02:13:32 PM »
It isn't clear just what point you are trying to make.

Are you trying to show a problem because Jakarta goes from 6.2 to 6.216, while Medellin goes from 5.916 to 5.9?
If so, this is a rounding error.
You only have the time to the nearest minute.
It is 6 hours and 12 minutes vs 6 hours and 13 minutes or 5:55 vs 5:54.
With only having the times to the nearest minute you would expect this.

Or are you trying to compare the 6.2 to 5.9? If so, they are at different latitudes and altitudes.
Or are you trying to compare the 38 to 48? If so, they are not exactly 180 degrees of longitude apart.

At least for globe model, it will be disqualified if the day time is different for two locations with the same latitudes.
Firstly, who cares? Their latitude is different. One is roughly 6 degrees north, while the other is roughly 6 degrees south.
As November is during the southern summer side of the equinoxes, we would expect the further south location to have more daylight. And unsurprisingly, we see Jakarta (that is 6 degrees south) has more than Medellin (which is 6 degrees north).
But altitude will also play a difference.
If you are at the top of a mountain, the horizon is lower which allows the sun to remain above the horizon for longer.

Here is a comparison for September 21st (roughly the equinox):
Jakarta:

Medellin:
« Last Edit: November 22, 2022, 02:18:47 PM by JackBlack »

Re: See? The Sun Ain't Have Constant Speed
« Reply #7 on: November 22, 2022, 02:25:10 PM »
The sun is a vehicle with changing speed all the time.

Go phew okay?~

Wish the earth was flat.  The sun would still be visible, and my days would have more sunlight hours…


Re: See? The Sun Ain't Have Constant Speed
« Reply #8 on: November 23, 2022, 01:46:41 PM »
Altitude numbers is different BUT the LATITUDE is the same:  6.2° S.

This is incorrect. You need to check again. Be more careful this time.

Quote
This makes a question: Is the altitudes numbers valid, or can timeanddate.com be a reliable reference?

The altitude numbers are right (per Stellarium). The difference in solar altitude at local solar noon for these two cities is what is expected, given their latitudes.

Quote
At least for globe model, it will be disqualified if the day time is different for two locations with the same latitudes.

Are they really at the same latitude? Check. What timeanddate.com shows is what the globe model predicts.

BTW, the sunrise/transit/sunset times are shown by timeanddate.com with a resolution of one minute. Working in minutes instead of hours:

Jakarta:
Sunrise  5h × 60 m/h + 26m = 326m
Meridian 11h × 60 m/h + 38m = 698m
Sunset 17h × 60 m/h + 51 = 1071m

Morning sun: 698m - 326m = 372m = 6h 12m
Afternoon sun: 1071m - 698m = 373m = 6h 13m
Day length = 1071m - 326m = 745m = 12h 25m

Medellin:
Sunrise  5h × 60 m/h + 53m = 353m
Meridian 11h × 60 m/h + 48m = 708m
Sunset 17h × 60 m/h + 42m = 1062m

Morning sun: 708m - 353m = 355m = 5h 55m
Afternoon sun: 1062m - 708m = 354m = 5h 54m
Day length = 1062m - 353m = 709m = 11h 49m

Both differences are one minute, the limit of your resolution.

For Jakarta on Nov 22 daylength listed in the table is 12h 25m 21s, which rounds to 12h 25m. This is 14s longer than the previous day and 13s shorter than the next.

For Medellin on Nov 22 daylength listed in the table is 11h 48m 48s, which rounds to 11h 49m. This is 11s shorter than the previous day and 11s longer than the next.

Your calculated 0.016h differences between morning and afternoon lengths in the same city are mostly rounding errors due to the times specified to the nearest minute [and truncated to 0.016h = 0.96m = 58s in your calculations but are actually one minute, which is why it's better to work in integer minutes instead of decimal-fraction hours]. In reality, morning and afternoon differ by a few seconds (probably around 6 seconds), not a full minute, with a shorter morning, longer afternoon in Jakarta, and longer morning, shorter afternoon in Medellin. The rounding errors happened to break in the right direction for both cities on this particular day, but wouldn't always do so.

Besides... how could there even be sunrises and sunsets if the earth were flat?
"Everyone is entitled to his own opinion, but not to his own facts." - Daniel Patrick Moynihan

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Danang

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  • Everything will be "Phew" in its time :')
Re: See? The Sun Ain't Have Constant Speed
« Reply #9 on: December 03, 2022, 11:18:10 PM »
Okay... Okay... Sometimes people made careless work. Me too.

But still, you should go phew okay 👌
• South Pole Centered FE Map AKA Phew FE Map
• Downwards Universal Deceleration.

Phew's Silicon Valley: https://gwebanget.home.blog/

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Danang

  • 5778
  • Everything will be "Phew" in its time :')
• South Pole Centered FE Map AKA Phew FE Map
• Downwards Universal Deceleration.

Phew's Silicon Valley: https://gwebanget.home.blog/

Re: See? The Sun Ain't Have Constant Speed
« Reply #11 on: December 31, 2022, 11:59:33 AM »
Altitude numbers is different ….
At least for globe model, it will be disqualified if the day time is different for two locations with the same latitudes.

Day time is different for two locations in the same building, if your building is tall enough:
https://www.news18.com/news/buzz/want-to-see-two-sunsets-in-the-same-evening-burj-khalifa-is-the-place-to-be-4132970.html
Doesn’t disqualify the globe model at all.  In fact, the phenomenon predicted by the globe model.