Construction of Khufu's pyramid started at about 2580 BC. Let's thus station ourselves at Manhattan - 42nd street and 6th avenue at 2580 BC.

We need to chose the date. The Summer Solstice is a pretty good choice. That year the summer solstice was on July 15. We consider an ideal horizon , in other words we measure the azimuth of the Sun rising on July 15, 2580 BC, at New York when it's altitude is exactly zero (0) degrees. This azimuth is with great accuracy the accuracy between our observation point at Manhattan and Heliopolis at Egypt. Heliopolis therefore symbolizes the observation of Helios - the Sun from New York - at Summer Solstice, that is when the Great pyramid was erected. Khufu and Kafre pyramids point to Heliopolis.




IHSOYS = EIMI H ZOH = 888

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