question #2 Sahih al-Bukhari 3272, 3273, Book 59, Hadith 82 : What is the significance of the sun’s position in determining prayer times?

Allah’s Messenger (ﷺ) said, “When the (upper) edge of the sun appears (in the morning), don’t perform a
prayer till the sun appears in full, and when the lower edge of the sun sets, don’t perform a prayer till it
sets completely. And you should not seek to pray at sunrise or sunset for the sun rises between two
sides of the head of the devil (or Satan).