How to position the sun in a specific position using Revit?

[Anonymous]

For our Free Open Source 3D Model of Dealey Plaza, I need to position the sun.

Its location respect to the Plaza, on November 22nd, 1963 at 12:30 pm may be determined here:

NOAA Solar Calculator Find Sunrise, Sunset, Solar Noon and Solar Position for Any Place on Earth 

The big question is: what do I do with the data obtained? I will need to do this in either 3ds Max, Revit or both.

TIA,

-Ramon F. Herrera
JFK Numbers

ramon@jfknumbers.org

This Shadow is Wrong

[ToanDN · Accepted solution]

[Anonymous · Accepted solution]

I think I will experiment with the azimuth and elevation.

-Ramon F. Herrera
JFK Numbers
ramon@jfknumbers.org

[ToanDN · Accepted solution]

I can get to 1970 in Revit 2019.  Close enough?

[Anonymous · Accepted solution]

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@ToanDN wrote:

I can get to 1970 in Revit 2019.  Close enough?

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'fraid not.   : -)

One of the fascinating findings of this project is that people have been making up numbers, distances and angles forever. For decades so-called JFK "researchers" (LMAO) have been debating whether the back shot entered the victim through T3 or T4 (whatever that means).

I knew about the Lincoln Continental: in all 3D models they lower, raise, widen, narrow the limo under the presidential asset in order to obtain the desired, pre-ordained results. However, this fudging (lying) happens all over the place. Even the height of the TSBD building (below) has inconsistent measurements. I will have to travel to Dallas (4 hours north of Houston) armed with a cheap laser gizmo, get permission from the Sixth Floor Museum to go to the roof, in order to get the exact height.

This is from a 6th. floor, so a fraction of a degree makes a large difference.

Next Phase of the Project

It doesn't matter how minute a detail, people will debate it. This is the reason for my/your/our Free Open Source 3D Model of Dealey Plaza being the first real scientific study. We place all our files, everything we find and produce where they belong: in a public web server:

http://dealey-plaza.org/this-government-as-promised/ 

I am fond of saying:

  "Those files do not belong to me. They belong to The People".

Thanks again!

-Ramon F. Herrera
JFK Numbers
ramon@jfknumbers.org

[ToanDN]

Try SketchUp.

[barthbradley]

Hasn't the Sun been in the same exact orbit around the earth for a millennium?  I mean, wouldn't the position of the Sun over Dallas on 11/22/1963 be identical to the position it was in on 11/22/2019?  

That aside, I don't think there is much Sun at 11:30PM anyways.  

[Anonymous]

"Its location respect to the Plaza, on November 22nd, 1963 at 12:30 pm may be determined here:"

-Ramon

JFK Numbers

ramon@jfknumbers.org

[barthbradley · Accepted solution]

Once upon a time in Dallas, Texas...

November 22, 40,000 years ago.

[ToanDN]

Since Revit do not offer lighting/shadow data prior to 1/1/1970, you could statistically prove 1963 wasn't any different by showing such data for 10-20-30 years since 1970.  if that still doesn't fly, well, maybe skip JFK and do something about more recent assassinations. 

[Anonymous]

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@ToanDN wrote:

If that still doesn't fly, well, maybe skip JFK and do something about more recent assassinations. 

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Sorry, can't do.

Like in Titanic when Jack told Rose: "I cannot quit, I am too involved already"  : -)

Please take a look at this videoclip. Ignore the silly trailer, the important part is my comments at the bottom.

The Greatest Showman 

-Ramon F. Herrera
JFK Numbers
ramon@jfknumbers.org

[ToanDN · Accepted solution]

Didn't know you were Hugh Jackman. Sorry about that.

[Anonymous]

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@ToanDN wrote:
Didn't know you were Hugh Jackman. Sorry about that.

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Speaking of good looking people, check this one out, with the shapely legs of a pretty lady:

Is JFK Numbers Too Good To Be True? 

-Ramon F. Herrera
JFK Numbers

ramon@jfknumbes.org

[ToanDN · Accepted solution]

I was attempting to watch it and got called up to see HR for viewing inappropriate content during office hours. You own me twenty bucks to bribing me out of it.

[barthbradley]

All this sophomoric and silly “accredited” joking aside; I am wondering why the heck Revit has Sun Settings by month, day, time AND YEAR dating back to 1970? The Earth’s orbit around the Sun hasn’t changed is over 100,000 years – and the tilt of the Earth’s axis hasn’t budged in over 41,000 years. Therefore, the Sun has been the same exact position in the sky at 12:30 PM on November 22 – EVERY YEAR of Mankind's existence on this third rock from the Sun.

[Anonymous · Accepted solution]

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@barthbradley wrote:

All this sophomoric and silly “accredited” joking aside; I am wondering why the heck Revit has Sun Settings by month, day, time AND YEAR dating back to 1970?

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It comes from Unix internals. The 'time' family of system calls return an integer. Zero (aka "The Epoch") is January 1, 1970.

Unix Time at Wikipedia 

-Ramon The Linux Hacker
JFK Numbers

Linux Programmer's Manual

[barthbradley]

Okay, so just to dumb this down for those of us aren't Mensans, this is basically about clock synchronization to account for the loss milli-seconds (1.7 ms per century) due to the fact that the Earth's rotation is slowing. Right? So, the bottom line is that 12:30:00.000 PM on November 22, 1963 is not the same as 12:30:00.000 PM on November 22, 1970. But, it’s within 0.00119 seconds by my calculations. I could be wrong though. Like I said, I’m no Mensan.

[Anonymous]

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@barthbradley wrote:

Okay, so just to dumb this down for those of us aren't Mensans, this is basically about clock synchronization to account for the loss milli-seconds (1.7 ms per century) due to the fact that the Earth's rotation is slowing. Right? So, the bottom line is that 12:30:00.000 PM on November 22, 1963 is not the same as 12:30:00.000 PM on November 22, 1970. But, it’s within 0.00119 seconds by my calculations. I could be wrong though. Like I said, I’m no Mensan.

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Barth:

I trust that the NOAA is doing a proper job.

NOAA Solar Calculator Find Sunrise, Sunset, Solar Noon and Solar Position for Any Place on Earth 

They gave us that very nice resource, let's take it for a spin...

-Ramon
JFK Numbers

 Always Go to AUTHORITATIVE Entities

[ToanDN]

How does the result look and how do you plan to use it?

[barthbradley]

HA! @Anonymous : I already have enough brain pain. I don't want to crunch any more numbers. Just tell me this: what is the difference between Sun's position in the sky over Dallas at 12:30 PM on 11/23/63 and its position at the same time on 11/23/70?  Is it measurable?  More importantly, would it change anything?  

BTW: what was the cloud coverage on that day?  You know it had just stopped raining prior to the motorcade arriving at Daley Plaza.