Simple Test you can do (mostly) at home.

On a ball, we’d see the stars from every point on that ball, which rotates in one specific direction or path, within ‘space’ viewed all around us, at different points.

Seeing stars from any point on Earth, we all see them move in a circle, in one same direction, and that’s not possible if Earth were a ball.

It makes sense because stars are aligned within a large concave shape, not as a ball Earth seeing stars this way.

On a ball, we’d see the stars from every point on that ball, which rotates in one specific direction or path, within ‘space’ viewed all around us, at different points.

Assuming stars look motionless and Earth is rotating in one direction or path within ‘space’, what we’d actually see of the stars, would be different directions at every point on Earth seeing them from Earth.

Seeing stars from any point on Earth, we all see them move in a circle, in one same direction, and that’s not possible if Earth were a ball.

From points on Earth which follow its rotational path, we’d see the stars pass by us in linear motion of Earth’s linear path of rotation. As a 360 degree view around us on Earth, like we see people pass by us over and over again from a carousel.

When we see them everywhere on Sarth moving in a circle, it proves Earth is not a ball, cannot be a ball.

As I said, a carousel rotates in one direction or path.

They all move in the very same direction.

I’ve told you about how stars wouldn’t be seen circling us from everywhere on Earth.

How about the rest of Earth not at the two poles? More circles, no reason to circle at all?

That can't happen on a flat Earth with a single pole at the centre.

Are you saying these gears couldn't possibly exist above a flat surface because one is turning one way and the other is turning another way?

Because that sure seems to be what you are suggesting, and I am saying the exact opposite.

So before telling others to read more carefully engage their brain, follow your own advice and read what others have said, with your brain engaged.

And their argument is correct.
That observation alone is not enough to prove Earth is spherical.

At a point which follows your ball Earth’s rotational path, looking upward from that point to the stars above you, what direction would you see them apparently moving in?

You would not be able to see the top of your ball from the middle of it.

You’d also see stars above you while rotating past them in a straight line, but we don’t ever see that from Earth, which we would if it was a spinning ball.

The reason we always see stars move above us in circles, is due to being on a flat surface while all the stars move together in one huge circle.

A ball Earth that rotates in a single path or line going around in a circle would have many different shapes than just circles. It would have to.

Focus on the middle point above you in the sky and see those stars. Then you rotate in a line past those stars. You’d not see those stars again that night, nor any other stars either.

A time lapse view of it would show the stars as streaking lines, not in a circle above you.

Draw it out if you want to see what it’d look like. No circles would be seen from your position on Earth

To do your calcs you would have to know how far you are from the North Pole. Flat Earthers would dispute this since distances between places are a huge conspiracy.
If you watch how the stars move around Polaris they follow a round arc. The sun follows this arc as well. The sun rises and sets and does not come around hovering.
When I was at 71degrees North in January, I noticed sunlight shining atop a hill farther from the sun than I was. I was in dark. I went on a snowmobile to the top of the hill and could see the sun partly on the horizon. The only way this would be possible on a flat earth is if the sun was below the flat surface. This supports the idea of a sun rising and setting, not hovering over our heads.
A strong argument that is hard to dispute from a flat earther is that they broke their back and the shade is down in their hospital room. They cannot look out the window to verify what you claim.
Cheers

A ball Earth would certainly offer different paths over all points on it.

They claim we see stars rotate in a circle above us because Earth is rotating in a circle, right?

Stars would be seen moving in every direction upon a rotating ball.

Circular paths to linear paths and all the other paths as well.

No, you’re using circular paths that wouldn’t exist or be seen like that.

Our actual view outward to stars would match up to the path rotation for your ball Earth.

Imagine ball Earth with the North Star above a point.

They like to jump at opposite circles of stars, but never mention the rest of ball Earth isn’t going to see stars circling!