The difference in the duration of day and night increases as one moves from:

The duration of day and night on Earth is determined by the rotation of the Earth on its axis and the tilt of the Earth's axis relative to its orbit around the Sun. At the equator, day and night are nearly equal throughout the year, with each lasting about 12 hours. This is because the equator is positioned perpendicular to the axis of rotation, receiving almost consistent sunlight all year.

As one moves from the equator towards the poles, the tilt of the Earth's axis causes a greater variation in the angle and duration of sunlight. During summer in a hemisphere, the pole tilts towards the Sun, resulting in longer daylight hours, while the opposite pole experiences longer nights during winter. This is why regions closer to the poles have extreme differences between day and night, including phenomena like the midnight sun and polar night.

Moving west to east or along the longitude lines does not significantly change the overall duration of day and night; it only affects local time zones. Therefore, the difference in day and night duration is primarily influenced by latitude, not longitude.

This principle is fundamental in understanding Earth’s climate zones, seasonal changes, and daylight variations. It explains why tropical regions near the equator have stable day lengths, whereas polar regions experience dramatic seasonal variations.

In summary, the difference in the duration of day and night increases as one moves from the equator to the poles. This knowledge is part of everyday science and helps explain seasonal changes, sunlight exposure, and patterns in human and ecological activities.