Reply #158: They had a database for all their ...

[quicknthedead]

photos and videos, and they wanted to standardize them all so they would have an accurate chronology of the events of 9/11. So first they had to have a standard on which to base it on, and they chose for this the LDEO 9:02:54 time (because it was when the plane hit the Tower).

They then brought all the times (whether variant or correct) under this baseline <9:02:54>, and after averaging the results, they had their adjusted timeline from which they could analyze the events chronologically. This is why they refer to it as adjusted times.

If you will check the document again you will see this.

This is explained in E.2 in the first two paragraphs:
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E.3 TIMING OF PHOTOGRAPHS AND VIDEO CLIPS

Since the primary objective of this task was the development of time lines for fire growth and spread in WTC 1 and WTC 2, it was crucial that times of known uncertainty be associated with as many visual assets as possible. The visual material assembled during the Investigation can be classified into two broad categories with regard to time information - material that incorporates some indication of relative time and that for which no time information is provided. Generally, different approaches had to be employed in order to time these two classes of material. These are detailed in Chapter 3 of this report.

Recognizing that the majority of timing information available from the visual material itself was of high relative accuracy, but of unknown and variable absolute accuracy, a timing scheme was adopted in which all of the times for items in the databases were placed on a common relative time scale tied to a single well-defined event. Due to the large number of different views available, the moment when the nose of the second aircraft struck the south face of WTC 2 was chosen as the reference time. This event was defined to have occurred at 9:02:54 a.m. based on times for major events included in the earlier Federal Emergency Management Agency (FEMA) report (McAllister 2002) describing the events of September 11, 2001.
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