You asked me where I would point my arms if I was making them parallel to the field lines at the equator. I drew you field lines as they would be (sorta) on a FE that shows they'd be parallel to the equator and pointing from the center of the earth outward.
What more do you want?
Also, who says that the fields would pass through the earth like that? I don't think they would, so I didn't put them on.