Summer solstice - Longest day of the Year

Last Updated23/06/2022

JUNE 21, was the summer solstice, the day with the longest sunlight hours in the northern hemisphere. On December 21 every year, this hemisphere has the winter solstice, when the night is the longest.

The reason why day and night hours are different from one day to the next lies in the Earth's tilt-or the 23.5" angle between its axis of rotation and its orbital plane. Day occurs on the side of the Earth facing the Sun, and changes to night as the Earth spins.
On the Equator, day and night are equal. As one moves farther and farther away, the difference between the lengths of day and night grows.
That makes the variation most extreme at the poles: During summer in the northern hemisphere, the entire polar region receives 24 hours of daylight for months; during winter, the region is in total darkness for months.
On the day the Sun is directly overhead on the Tropic of Cancer, it is the summer solstice in the northern hemisphere. When this happens on the Tropic of Capricorn, it is the winter solstice.
On the Equator, the sun is directly overhead on two days. These are the spring equinox in March and the autumn equinox in August. Across Earth, day and night are of equal length on these two dates.