Longest day/night is experienced during a year in the

The duration of daylight and darkness varies significantly with latitude due to the Earth's axial tilt of 23.5°. At the Equator, day and night remain approximately 12 hours each throughout the year. At the Tropics, the maximum day length is about 13.5 hours. At the Arctic and Antarctic Circles (66.5° N/S), the longest day (Midnight Sun) and longest night (Polar Night) last for 24 hours. However, at the Poles (90° N/S), the sun remains above the horizon continuously for six months and below it for the following six months. Consequently, the longest continuous period of day and night experienced anywhere on Earth occurs at the Poles.