DEDICATED TO THE SAFE OBSERVATION OF
THE TOTAL SOLAR ECLIPSE OF APRIL 8, 2024!
years months days
until ECLIPSE DAY!
ESPAÑOL | FRANÇAIS
 
ESPAÑOL | FRANÇAIS
DEDICATED TO THE SAFE OBSERVATION OF THE TOTAL SOLAR ECLIPSE OF APRIL 8, 2024!
years months days
until ECLIPSE DAY!
 
 
Another TOTAL ECLIPSE
is coming to
North America!

It’s the Great North American Eclipse!
...and we want everyone to see it!
 
Your use of this site is contingent on your understanding and agreement that you will comply
with all the rules and protocols for eye safety when observing any solar phenomenon.
 
Your use of this site is contingent on your understanding and agreement that you will comply with all the rules and protocols for eye safety when observing any solar phenomenon.
Latest News:
  • Latest news about the 2024 eclipse will go here.
  • Eclipse2024.org is building great content - check in often!
  • Latest news about the 2024 eclipse will go here.
  • Eclipse2024.org is building great content - check in often!
How fast is the shadow moving across the continent during the eclipse? – Eclipse 2024 blog

Eclipse Blog

The world is coming to North America to see an eclipse!

How fast is the shadow moving across the continent during the eclipse?


A great question! The Moon does indeed “carry” its shadow along with it, as it moves in its orbit around the Earth.

shadow_scrape

And whenever that shadow happens to scrape across the Earth, we have a total eclipse!  (Of course, you have to be in the Path of Totality to see the total eclipse, and you have to use eye protection whenever the eclipse is not total – regardless of whether you’re in the path or not!)

Because of the geometry of the Earth’s shape, the shadow will travel faster across its surface and the ends of the eclipse path, and slowest right in the middle.  By using one of the best eclipse calculators out there (thanks to Xavier Jubier!), we can see that the Moon’s shadow (also called the “Umbra”) is moving:

  • 1560 mph in Sonora
  • 1620 mph near San Antonio
  • 1995 mph near Indianapolis
  • 2600 mph near Montreal
  • 4400 mph in Newfoundland

Make sure you are in the path on eclipse day!  And we’ll see you… in the shadow!

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