From Romer’s book “The Great pyramid”:

“...,Spence estimates that the orientation of the casing stones of the eastern baseline of the Great Pyramid was set in October 2478, +-5years, BC.”

October: eighth month => Neptune(eighth planet)

In the same book we read:

“Khufu’s astronomers, it now appears, had found their north by bisecting the arcs of Kochab and Mizar, two polar stars, as they swung into simultaneous vertical alignment above and below the dark center to north, such as occurred in the night sky in August 2478 BC...”

This is screen shot of the sky (CyberSky 4 software) at a little after Noon (12:42 PM) from Giza, at the date July 6 of 2478 BC. We notice perfect observational alignment between Jupiter and Netpune. But wait a minute, these are the exact stars which are encoded at Giza – dimension and trajectory wise. We also notice that while these two planets are just rising in the East, Saturn with Aldebaran are just setting in the West. OCT is based on the correlation between the three belt stars of Orion and the placement of the three Giza pyramid. It turns out though that instead of a 172.89 degree angle which they formed when the pyramids were built – the Giza angle is 168.54 degrees. But if we compute the Jupiter – Saturn angle – see diagram – at this date we see that it is 172.57 degrees – very close to the Orion angle. So did the architects want to encode Orion by way of the planets? Let’s just note that the date in this same year in which Jupiter is just rising over the horizon and Saturn at the same time is just setting is September 8. At this exact instance we see Antares, Rigil Kantaurus, Canopus, and Rigel just above the horizon.