Interesting perspective. afaik, obelisks around the world used to mark the time of the day, month, years based on the shade generated by the sun. I saw somewhere a really nice documentary of how the one in St. Peter place in the Vatican was working and the esoteric meaning related to it. Below is a summary of my understanding of my understanding.

The sum of the shades also relate to the letters J and X, initials of an old name of a messiah (J for Jesus, X for Christ), representing the most known christogram, the symbol generated of the first two letters of the Greek word for Christ, “Χριστός” (Christos), which are Chi (Χ) and Rho (Ρ), overlaid or superimposed.

a bit more info about the OCCULT SYMBOLISM OF THE VATICAN here https://werdsmith.com/genesology/AxhSAwIRw