Why does it dark in South in am later than the north?

The phenomenon of it being darker in the southern regions later than in the north is primarily due to the tilt of the Earth's axis and its curvature. During certain seasons, southern areas experience longer twilight periods because the sun sets at a more oblique angle compared to northern latitudes. This results in a gradual dimming of light, allowing for extended twilight. Additionally, geographic features and atmospheric conditions can also influence how quickly darkness falls in various regions.