Why sun is seen 24 hours from some area of the earth while in another area there is no sun from several days?

The phenomenon of continuous daylight and darkness is due to the tilt of the Earth's axis and its orbit around the Sun. Areas within the Arctic and Antarctic Circles experience 24-hour sunlight during summer months, while they have prolonged darkness in winter. Conversely, regions near the equator have more consistent day lengths throughout the year, experiencing relatively equal day and night. This variation is a result of the Earth's axial tilt and its rotational dynamics.