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How Often Are Solar & Lunar Eclipses? PDF Print E-mail
Contributed by J. R. Ransom   
Solar Eclipse
Solar Eclipse
How Often Are Solar & Lunar Eclipses? Eclipses of the sun and moon are not rare. There are between 4 and 7 eclipses each year. There were 4 solar eclipses and 3 lunar eclipses in 1982. This list has solar and lunar eclipses from 1999 to 2010, plus links to more info about eclipses.

Remember the first time you saw an eclipse of the sun or moon? Probably not, because unless you're real young, it was quite a while ago.

From time to time these eclipses capture media attention almost always when the eclipse is "total". Besides the obvious world of the five senses, there's a pretty good case to be made that eclipses also effect people in other ways, because there are most likely some very powerful unseen energies running between these huge celestial bodies (Sun, Earth, Moon).

It's been said that big changes happen for the humans on Earth during times of eclipses - There certainly is some correlation between eclipse events and historical events, but that's another article. We're just dealing with the timing of eclipses during the Eclipse Year.


Lunar Eclipse
Lunar Eclipse
Eclipse Year, the Line of Nodes align with the Sun every 346.6 days. This is called the "Eclipse Year".

But, it must be a Full or New Moon when the nodes line up to have an eclipse. This happens only very rarely.

From a given location on the Earth you see a Total Lunar Eclipse every 3 years (or so), and a Total Solar Eclipse every 360 years.

In most cases, when one eclipse happens a second eclipse will happen in about two weeks. Sometimes there is a third eclipse two weeks after that. Sometimes there are two solar eclipses in a row, sometimes there are two lunar eclipses in a row, except they are months apart.

It might be interesting to observe the world around you with a different eye during eclipses. You might notice a bunch of subtle and not-so-subtle changes happening in your world. A lot of them just might be the effect of eclipses.

No: Jan to Mar Apr to Jun Jul to Sep Oct to Dec
1999 4 Lunar: Jan 31
Solar: Feb 16
Lunar: Jul 28
Solar: August 11
2000 6 Lunar: Jan 21
Solar: Feb 21
Solar: Jul 1
Lunar: Jul 16
Solar: July 31
Solar: Dec 25
2001 5 Lunar: Jan 9 Solar: June 21
Lunar: July 5
Solar: Dec 14
Lunar: Dec30
2002 5 Lunar: May 26
Solar: June 10-11
Lunar: June 24
Lunar: Nov 19-20
Solar: Dec 4
2003 4 Lunar: May 16
Solar: May 31
Lunar: Nov 8-9
Solar: Nov 23-24
2004 4 Solar: April 19
Lunar: May 4
Solar: Oct 14
Lunar: Oct 28
2005 4 Solar: April 8
Lunar: April 24
Solar: Oct 3
Lunar: Oct 17
2006 4 Lunar: Mar 14-15
Solar: Mar 29
Lunar: Sept 7
Solar: September 22
2007 4 Lunar: Mar 3-4
Solar: March 19
Lunar: Aug 28
Solar: Sept 11
2008 4 Solar: Feb 7
Lunar: Feb 21
Solar: Aug 1
Lunar: Aug 16
2009 6 Solar: Jan 26
Lunar: Feb 9
Lunar: Jul 7
Solar: Jul 21-22
Lunar: Aug 5-6
Lunar: Dec 31
2010 4 Solar: Jan 15 Lunar: Jun 26
Solar: July 11
Lunar: Dec 21

If you'd like more about this, click the links below:
Astronomy 161: An Introduction to Solar System Astronomy - Prof. Richard Pogge,
BBC: Why Eclipses Happen - Animation
Red Orbit
NASA's Eclipse Page
eclipse.org.uk
US Naval Observatory

 
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