Every year, June 21 is marked as the day of the summer solstice in the northern hemisphere of the world.    

The solstices, which mark the changing of seasons, occur twice a year and indicate the year’s shortest and longest daylight hours, depending on the hemisphere in which one is located, during which the length of day and night differ significantly. This makes solstice days more noticeable to many observers in comparison to the subtle equality of day and night experienced during equinoxes. 

After an enduring arctic winter for half a year, the northern hemisphere witnesses the longest day and shortest night of the year, marking the summer solstice, whereas the southern hemisphere experiences summer in December.