First, this is a top view centered on the South Pole. Because the shaded part represents the 6th day, one of OQ and OP is the 0 hour longitude, and the other is the 180 degree longitude. And because MON is the morning and evening line, one of M and N is 6 o'clock and the other is 18 o'clock (6 o'clock in the evening). Therefore, the longitude is only when op is 0, that is, p is 0/24 point. Because OQ does not meet the conditions to become 0 points. The distance from 24 o'clock to 6 o'clock and 18 o'clock is equal.

That is, on the picture you make the extension line of OP intersecting the equator and point H. HOP is a straight line. MON is the morning and evening line, one of OP and OH is o/24 points, and the other is 12 points.

Because HOP bisects the sector MON.

The answer is D.

The Antarctic is in the polar night period at this time. The earth is farther away from the sun and the revolution speed is slower—A is wrong; Zhengzhou is in the northern hemisphere. , so the day is long and the night is short - B is wrong; when point P is 0, the difference between P and Q is 120 degrees, which is 8 hours, and point Q should be 16 o'clock (4 p.m.) - C is wrong;