Byrd:

Thought you may be interested in knowing...
The pyramids were built before 1967 AD...without the use of isotopes...!

Also...the length of day varies "every" day of the year...!

A day was divided into two sets of 12 hours by the Egyptians; it is presumed they adopted the 60 division system from the Babylonians.

Thought you would like that piece of info; it’s quoted from the "identical" source you used, but neglected to mention...Wikipedia.

So....the day would have 86,400 seconds...
Simple stuff up to now, as it was until 1967AD and the isotope people.

But here is the complicated part:
The rate of acceleration is variable depending on the degrees latitude where measures are taken.
Since you appear to be capable of math tabulations to ten decimal places (it must require a tremendous amount of time to calculate and paper to write on), you have the time and are using the Internet, I will ask you to confirm/reject the rate of acceleration in Rc that I posted. Hint: use 30 degrees north...you will find that it matters very little about the minor difference of Giza's true location [29.9+ degrees].
Once achieved, then find the "logarithm" of your answer and multiply it by "pi" (use your ten decimal place pencil and paper system).
Bet your result is the number four.
Would you like to know how it was achieved?

Best.
Clive