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April 4th- A special day for moon watchers
Why is the Lunar Eclipse on April 4th so special?
If you remember only 2 weeks ago we marveled at the total solar eclipse on March 20th.April 4th marks the first lunar eclipse of the year. In 2015, there will be a total of four eclipses. On September 13th, there will be a partial Solar Eclipse and again on September 20th there will be another Total Solar Eclipse on September 28th.The occurrence of a total lunar eclipse is rare, in fact, there are only one total eclipse for each three.Views of the Lunar eclipses depend on your location only four to five has been seen all over the earth in each decade. Additionally, Lunar eclipses can happen in any order so four total lunar eclipses in a row are called a lunar tetrad. To be considered a tetrad, there must be four total eclipses in a six months period. The April 4th eclipse with be the 3rd in the tetrad we are experiencing now. There are also six full moons between the two total lunar eclipses in a tetrad.
According to NASA there will be eight tetrads from 2001 to 2100.The first was in 2003 with this year marking the second. April 4th will be the third lunar eclipse of 2014-2015. The first being on April 15th of 2014 , the second also in 2014 was upon October 8th . The last lunar eclipse of this triad will be on September 28th, 2015. .
In some centuries the occurrence of a lunar triad is a rare thing, but for the first time since the ninth century we will have eight lunar triads with the next on occurring with a total lunar eclipse on April 25th.
Experts say that those of us in the United States are in alignment to to watch the lunar eclipse this year. Those living in Alaska and Hawaii are going to be lucky enough to see the eclipse from start to finish.