When is Summer Solstice in 2015?

The Summer Solstice, also known as the June Solstice, in 2015 is on Sunday, June 21st. The Summer Solstice also marks the longest day of the year in terms of the most sunlight in one single day. 

What is Summer Solstice ?

The longest day of the year in 2014 falls on the Summer Solstice, also known as the June Solstice. This Summer Solstice occurs when the tilt of the earth's semi-axis is most inclined towards the sun. This occurs once every year in the month of June, which is why the Summer Solstice has become to be known by the name June Solstice in the northern hemisphere. The Summer Solstice marks the day with the most sunlight in one day, referred to as the longest day of the year. 

Opposite of the Summer Solstice is the Winter Solstice, which happens to be the shortest day of the year.