How was the Queen's Chamber designed? What was the scope of the mysterious niche?
I have updated my Genesis web page with some ideas.
birth day
Giza azimuth error = 0° 3' 53"
home altitude error = 0° 3' 24"
home azimuth error = 0° 1' 53"
Here I have defined the as observed from Giza Sun geometric altitude(no atmosphere) equal to the South King's Chamber air shaft slope, exactly 45 degrees. I used Stellarium and Petrie QC data.
birth year/random date
Giza altitude error = 0° 54' 39"
home altitude error = 11° 10'
home azimuth error = 7° 6'
Here I have defined the Sun azimuth based on the geometric placement of the edge of the center depth axis of the niche - see diagram. The altitude error is based on the closest shaft slopes(QC South, and KC North). I used an online random number generator to chose a random date of the year, as also a random European capital as the observation point.
I have updated my Genesis web page with some ideas.

birth day
Giza azimuth error = 0° 3' 53"
home altitude error = 0° 3' 24"
home azimuth error = 0° 1' 53"
Here I have defined the as observed from Giza Sun geometric altitude(no atmosphere) equal to the South King's Chamber air shaft slope, exactly 45 degrees. I used Stellarium and Petrie QC data.

birth year/random date
Giza altitude error = 0° 54' 39"
home altitude error = 11° 10'
home azimuth error = 7° 6'
Here I have defined the Sun azimuth based on the geometric placement of the edge of the center depth axis of the niche - see diagram. The altitude error is based on the closest shaft slopes(QC South, and KC North). I used an online random number generator to chose a random date of the year, as also a random European capital as the observation point.