March 20, 2015 Partial Solar Eclipse.

A solar eclipse happens only when the Sun, Earth and the Moon, New Moon phase, are aligned. The Moon, Earth’s natural satellite, stands between your planet and the sun, covering all or part of sunlight.
This phenomenon is repeated every period of approximately 18 years and 11 days.
In addition to the astronomical fascination, this leads Man for general philosophical questions of existence. Porto, Portugal.