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Announcement :: Technology
23 Nov 2006
Modified: 08:35:16 PM
internationally agreed calculations for analyists studying 9/11 'Plane' footage from the tragedy of 9/11 2001 in Manhattan
For the benefit of all researchers involved in analysis of video and photographic images of planes in New York on 9/11 here are recently obtained and agreed calculations on the sun's position in the sky relative to the horizon at key moments of the tragedy in New York on September 11 in the year 2001. This information provides a bench mark for the study of sunlight, shadow etc shown in the video/photographs from 9/11 and is submitted here as a recently obtained and agreed calculation.


Latitude/Longitude for the World Trade Center in Manhattan at the complex including the twin towers, with its grid coordinates being 40:42:51N and 74:0:23W. (For sunlight, the angle difference of the sun from the two towers was separated by less than 200 meters and was therefore unobservable to the eye).

A spreadsheet is available for any who wish to study these calcualations in detail of the sun’s angle over the WTC at the two critical times of 8:46:26 EDT and at 9:02:54 EDT respectively, that of the two attacks on the twin towers. Since study of shadows on photographs and video frames may be vital in determining the authenticity or otherwise of those images there has also been a factor added in to these results which allows the proper elevation angle of the upper limb of the sun when only 6% of light is visible. ( This is the point where the umbral shadow just becomes visible to the eye). In other words allowances are made in the following data for possible solar distortions. The results for the North Tower and South Tower of the World Trade Centre are as follows at the time of the two incidents under examination -

The results: 8:46:26 9:02:54

Sun Elevation (center) 24.354 27.253 degrees measured from horizon to center of sun

Sun Azimuth (center) 105.539 108.580 degrees measured from north, clockwise, to fall line of sun on horizon

and (South Tower)
8:46:26 9:02:54

Sun Elevation (6%) 24.608 27.507 degrees measured from horizon to 6% sunlight limb of sun

Sun Azimuth (center) 105.539 108.580 degrees measured from north, clockwise, to fall line of sun on horizon


A word of caution to analysts of photographic/video material: Be very careful in looking at or measuring shadows .-... the shadow contrast is very important in such cases and is "fuzzy" as the shadow turns from umbra through penumbra to full light. A 6% area of the sun that represents about a 1/250th of sunlight is therefore used here... which is very typical of a bright sunny day. 9/11 was just such a day. Since smoke and haze existed at the time of the second event, it is not possible to say with precision what quality of light existed at that place and time - ...perhaps significantly more sun than 6% is required to "step out" of the shadow in that case. So it hs been granted that there is a small percentage of error in these or any other results. But, beyond doubt, is the fact that the sun was ABOUT 27.5 Degrees above the New York horizon at the time of both these tragic events. Any errors in such a figure would not be greater or less than 1 degree +/- if these video/photographic images were shot at the place and time in question.

These calculations have been kindly calculated on request by Dr Robert Kellog and members of the North American Sundial Society and are correspond with data also also obtained from the Royal Observatory here in London and elsewere in Europe. Permission has also been obtained by Dr Kellog to share these results freely with any person interested in factual analysis of this kind. I am extremely grateful to these American mathematicians for their help.

This very type of calculation was successfully used by the above mentioned North American Sundial Society while designing the Freedom Highschool 9/11 Memorial Sundial (which stands about 3 meters high). These people were able to place markers on the ground within an inch of predicted shadowfall commemorating all 4 tragic events of that September day. Thus the results are already confirmed by by independent sources and by pratical demonstration.

Submitted here for the use and benefit of all who wish to work with precision on photographic/video analysis on the images and films of 9/11 which show (or purport to show) planes over Manhattan on that day.

Yours sincerely and with best wishes

Robert Newman

London, England

This work is in the public domain
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