dont forget to try and explain
24h sun in antarctica
https://en.wikipedia.org/wiki/The_Final_Experiment_(expedition)
flight paths that don't make sense with the "flat earth model", if there is such a model, some claim there is no "flat earth model" but flat earth dave certainly seems to use one
https://creation.com/en/articles/a-direct-test-of-the-flat-earth-model-flight-times