>>On the winter solstice of December 21, the shortest day of the year in the northern hemisphere,[clarification needed] the shadow of one of the blocks disappears when the sun is directly above it.
This is not quite right. On that day the Sun is directly above São Paulo.
At the archaeological site: Latitude = +2.62°, Solar declination ≈ −23.44°, Difference = about 26.06°.
Therefore, at solar noon: Sun altitude ≈ 90° − 26.06° = 63.94°. Consequently, at that particular latitude, a normal vertical stone cannot have its shadow disappear because the Sun is directly overhead on December 21.
Same! Somehow I had never heard of this. Will have to try and visit someday!
Also, lol @ the name of the river near that site. (For the gringos: "Rego Grande", "rego" officially means ditch/trench, but nowadays it's much more commonly used as slang for butt crack. So, it's the Large Butt Crack river. Which I guess tracks for Brazil :P)
I found it to be very fascinating how names like Amazon, Alibaba, Tesla, Titanic, Mustang et al had almost crushed the original meaning that, once encountered, you instantly recognized it as a brand/product unless clear context is provided.
This is not quite right. On that day the Sun is directly above São Paulo.
At the archaeological site: Latitude = +2.62°, Solar declination ≈ −23.44°, Difference = about 26.06°.
Therefore, at solar noon: Sun altitude ≈ 90° − 26.06° = 63.94°. Consequently, at that particular latitude, a normal vertical stone cannot have its shadow disappear because the Sun is directly overhead on December 21.
Göbekli Tepe (Turkey) ~9600 BCE Almendres Cromlech (Portugal) ~5900 BCE
[1] https://news.ycombinator.com/item?id=49507810#49510204
https://www.reddit.com/r/whatsthisbug/comments/1l6uaj/seriou...
I'm Brazilian, and this is the first time I've heard of this park.
Also, lol @ the name of the river near that site. (For the gringos: "Rego Grande", "rego" officially means ditch/trench, but nowadays it's much more commonly used as slang for butt crack. So, it's the Large Butt Crack river. Which I guess tracks for Brazil :P)
[...submitted title "Amazon Stonehenge: Parque Arqueológico do Solstício" kind of asked for it...]
https://youtube.com/shorts/fQXcpdtCcTs