Its my
amateur attempt to determine the time at which BG was filmed analyzing shadows of Abigail and BG from the available images.
I used
http://www.suncalc.org to establish shadows position.
We know at what time photo of Abigail was taken : 14:07PM, we can also see her nice shadow on the pic.
We see shadow of BG which seems to be parallel to the boards of the bridge.
This is how I did it. First, I set time for 14:07PM and location for Monon Bridge, Delphi, Indiana. I drew a red line, parallel to shadow for further comparison.
Next, I drew a red line parallel to the boards of the bridge (BGs shadow) and tried different frames of time in suncalc so the shadow fits BG's shadow. I drew also a red cross to be sure that the line parallel to the boards is really parallel into it (let's call it control) as two major elements of the bridge are perpendicular so the ankles are 90° between them. Conclusion : the time at which shadow from suncalc reaches same shadow position with BGs shadow from filming image is
14:58PM.
After, I linked two red lines created by shadow of Abigail at 14:07PM and shadow of BG at 14:58PM and placed it on compass scheme. Next, I drew a blue line, parallel to the shadow of Abigail which I compared also to the shadows of the trees from the image. On a same image (Abigails) I drew another blue line parallel to the bridge boards (BG shadow). I connected both blue lines and place it on compass scheme. We can see the same time frame between two shadows expressed in degrees in both cases.
Again this analysis is estimative so please dont assume its exact as Im not a pro.