WHAT IS THE SUMMER SOLSTICE?

The summer solstice marks the peak of summer and takes place on the longest day of the year, that is to say when the Sun is at its highest in the sky. In Britain and other places north of the equator, to be precise the Northern Hemisphere, this takes place on June 21. After the summer solstice the days get shorter until the winter solstice when they start to get longer again.

June 21 is called the summer solstice in the Northern Hemisphere and simultaneously the winter solstice in the Southern Hemisphere. Around December 21 the solstices are reversed and winter begins in the Northern hemisphere.

The summer solstice has been celebrated since ancient times and is still celebrated around the world today. 
Many people gather at Stonehenge which is believed to have been used as an important religious site by early Britons 4,000 years ago.
Here you can read an interesting article about the meaning of the summer solstice.