Q: Is a midnight the transition time period from one day to the next: the moment when the date changes? ¶
A: Yes.
Q: Is a midnight dependent on longitude and time of the year rather than on a time zone? ¶
A: Yes.
Q: Is a midnight the time opposite of solar noon? ¶
A: Yes, and when the sun is closest to nadir and the night is equidistant from dusk and dawn.
Q: Was a midnight halfway between sunset and sunrise? ¶
A: Yes, and varying according to the seasons.