You wrote : "The difference (d) between the Gantenbrink mean South Queen Chamber shaft slope and the altitude of the Sun at the time I was born is (based on Stellarium): d = 0.008 degrees "

I like the idea of the alignment with the sun coinciding with your birth - or have I understood it wrongly ?!

I can offer an explanation for the features of the Queen's Chamber.

The Book says the purpose of the Queen’s Chamber with its two blocked off shafts and closed niche remains a mystery and most explanations for it seem implausible.

About the Queen's Chamber shafts. Page 103:

"It is difficult to understand what would have motivated the designers to adopt such an elaborate architectural expression of a religious concept, only to abandon it quite suddenly afterwards."

Note however that any abandonment did not happen that suddenly, as the shafts continued to be built well above the height of the Kings Chamber !

The closed off nature of the shafts does not always present a problem in the magic world of the dead. We have elsewhere ‘false doors’ through masses of masonry.

So is it possible the features of the QC may indeed have been as originally intended ?

There is also the offset corbelled niche in the east wall of the chamber. Unfortunately the Book does not have any suggestions for its purpose either, although it states it is not likely to be for a statue. For me it looks like a window as in the Bent Pyramid but it is closed off.

In the top post above, I argued that the shafts of the Kings Chamber were for the purpose of enabling the afterlife Hed Sed. So it is logically here that an explanation of the QC shafts should be sought.

It could be argued that we have three closed off features – the two shafts and the niche. They could all be called targeted ‘false’ windows.



The three targeted windows of the Queen’s Chamber

The shafts are generally thought to be in the direction of the star Sirius at culmination in the south and the star Kocab at culmination in the north.

The ‘window’ niche to the east is towards the horizon, just south of east. This is where the sun, Orion and Sirius could be observed rising.

What connects these three ‘windows’ ? It is this.

Kocab at culmination is a stellar day marker for counting the days. It returns to the top position once a day.

The sunrise indicated the start of each day for counting the days of the solar calendar (365 days)

The new heliacal rising of Sirius with the sun at the horizon marks the start of the New Year.
This event indicates the day when the Heb Sed shall be performed.

Before that day Sirius was not visible in the night sky for several months.
By counting the days the precise day of the New Year could be known.

The niche ‘window’ to the east would enable this event just south of the east to be monitored.

The return of Sirius with the sun coincided with the renewal of the king in the heb sed.

The proposal here is that the Queen’s Chamber was like a ‘control room’ where the days were watched and counted in preparation for the dead king’s afterlife Heb sed.

A second purpose was probably the maintenance of Maat in the cosmos.

There is some evidence that day counting systems were also in place at the Djoser Complex and at Khafre’s pyramid. So perhaps this day counting facility was a necessary part of early pyramids for the timely enactment of afterlife Heb Sed rituals, and for ensuring the regularity of the seasons.