Solar eclipse is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks occults the Sun. This can happen only at new moon. when the Sun and the Moon are in conjunction as seen from Earth in an alignment referred to as syzygy. In a total eclipse the disk of the Sun is fully obscured by the Moon. In partial and annular eclipses, only part of the Sun is obscured.
If the Moon were in a perfectly circular orbit, a little closer to the Earth, and in the same orbital plane, there would be total solar eclipses every single month. However, the Moon's orbit is inclined (tilted) at more than 5 degrees to the Earth's orbit around the Sun ( see ecliptic), so its shadow at new moon usually misses Earth. Earth's orbit is called the ecliptic plane as the Moon's orbit must cross this plane in order for an eclipse (both solar as well as lunar) to occur. In addition, the Moon's actual orbit is elliptical, often taking it far enough away from Earth that its apparent size is not large enough to block the Sun totally. The orbital planes cross each other at a line of nodes resulting in at least two, and up to five, solar eclipses occurring each year; no more than two of which can be total eclipses. However, total solar eclipses are rare at any particular location because totality exists only along a narrow path on the Earth's surface traced by the Moon's shadow or Umbra.
Solar Eclipse 2015 Live
EventUTC TimeTime in Boston*First location to see partial eclipse beginMar 20 at 7:41 AMMar 20 at 3:41 AMFirst location to see full Eclipse beginMar 20 at 9:09 AMMar 20 at 5:09 AMMaximum EclipseMar 20 at 9:45 AMMar 20 at 5:45 AMLast location to see full Eclipse endMar 20 at 10:22 AMMar 20 at 6:22 AMLast location to see partial Eclipse endMar 20 at 11:50 AMMar 20 at 7:50 AM
* Local times shown do not refer to when the ecli