If you had read the link you would have seen how it was disproven in the thread by a FE'er.
Disproven by johannes kepler? Oh please post me his irrefutable claim here. I've gone through that topic and all what I read is make up claims without any evidence or data. RET has irrefutable data for the equinox experiment. Anybody here is also able to wake up before the sunrise tomorrow and measure the azimuth at sunrise, or wait until the end of the day and measure the azimuth at sunset. You will measure 90° at sunrise and 270° at sunset (with a margin of error). That's what it was predicted for RET, not for FET.
johannes kepler was supposing to make a diagram of his outlandish bending light theory last January 13th, 2009. And there is still no diagram available! Please post a diagram of how the azimuth at sunrise can be observed at 90° on a flat Earth, or how the azimuth at sunset can be observed at 270° on a flat Earth.