Except for studying marine navigation in my live on boat/​ocean settlement phase back in my teens and twenties, no. But I was more suggesting that there are thousands of people (possibly millions) - pilots, navigators, amateur astronomers—who regularly use the first two. If they were off even a little, lots of somebodies would have noticed and they would have been corrected for the proper shape of the earth.
Except for studying marine navigation in my live on boat/​ocean settlement phase back in my teens and twenties, no. But I was more suggesting that there are thousands of people (possibly millions) - pilots, navigators, amateur astronomers—who regularly use the first two. If they were off even a little, lots of somebodies would have noticed and they would have been corrected for the proper shape of the earth.