One summer, four seasons, and comes after the spring, followed by autumn and winter.
The advantage of this summer that Nharha the longest in the number of hours, and the highest temperature, compared with the rest days of classes.

The astronomers calculated, starting the summer in the northern hemisphere, the start of Cancer, on June 22, and ends at the beginning of fall into the Libra, on Sept. 23.

Because of the importance of summer medical stemming from the effects of rising temperatures on the human body, what concerns us is not that precisely observe the summer, but scientists determine the meteorology summer.

The expense of scientists and meteorologists to summer days relies on the start warming the atmosphere, which is more accurate than the health process.

The reason for the difference between the way astronomers and the way the people of meteorology at the expense of the summer various regions of the world is the existence of what is known in Meteorology "the backwardness quarterly" seasonal lag

 

Amandamemo