Dedicated to the safe observation of the
A Total Solar Eclipse is Coming to the United States!

Get your eclipse glasses NOW!
(You're going to need them!)
Your use of this site is contingent on your understanding and agreement that you have read this link, you agree with its contents, and you will comply with all the rules of common sense and well established protocols for eye safety when observing any solar phenomenon.
"...And we'll see YOU... in the shadow!!"

What is a total solar eclipse?

Let's get more technical!

Please see our blog post about eclipse calculations first!

Then, you can enjoy studying the "Besselian Elements" for the 2017 total eclipse:

Besselian Elements for the total solar eclipse of August 21, 2017

These were calculated by none other than "Mr. Eclipse" himself - Fred Espenak!
©2007-2017, inc. All Rights Reserved.