The problem with this miracle is that it was confined to a place in Portugal. If the sun was physically moved, all in the daylight hours on Earth would have seen its effects. This did not happen.
If it occurred through natural processes, you would have a point. But it was a miracle, a suspension of the natural order for the purpose of faith, so I stand by what I said.
"For there shall be a time, when they will not endure sound doctrine; but, according to their own desires, they will heap to themselves teachers, having itching ears:" [2 Tim. 4:3]
"Be not therefore solicitous for tomorrow; for the morrow will be solicitous for itself. Sufficient for the day is the evil thereof." [Matt. 6:34]