Oenopides was the first to discover and measure the tilt.
He came up with about 24 degrees around 480BCe using geometry and measurements of sun angles at several times of year.
Hope this helps
The latitude of the Antarctic Circle is roughly 66.5 degrees South.
There is one point on the Antarctic Circle at every possible longitude.
False They Can Say What They Want
its D. THE FORMATION OF EXCLAVES ............. ON E2020 just did the test