Question

Difference of time in Sunrise proves that Earth is round, how?

Answer 1

Ha ha ha ha..... what a question? No sense in the question

Answer 2

If the Earth were flat the Sun would light up the entire surface of the Earth at the same time, so that means each place would experience sunset and sunrise all at the same time without any kind of difference.

Due to the spherical shape of the Earth, half of it stays illuminated while the other half experiences nighttime.