DEDICATED TO THE SAFE OBSERVATION OF
THE TOTAL SOLAR ECLIPSE OF APRIL 8, 2024!
years months days
until ECLIPSE DAY!
ESPAÑOL | FRANÇAIS
Home
 
ESPAÑOL | FRANÇAIS
Home
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 be posted here.
  • Eclipse2024.org is building great content - check in often!
  • Latest news about the 2024 eclipse will be posted here.
  • Eclipse2024.org is building great content - check in often!

Eclipse Calculations

A technical discussion about eclipse calculations

Here are some technical discussions that will help you learn more about the science of eclipse predictions!
This is a pretty technical section, but we think it’s important to provide this information to people who are interested.

It's certainly not necessary to know all this if you're only interested in watching the eclipse, but it sure is interesting!
If you want to learn more about the science and math, we’ve boiled it all down for you – WITHOUT formulas!

Eclipse predictions

How do scientists know exactly when eclipses will happen?

Universal Time

A (mostly) non-technical discussion of how time is kept in astronomy!

Delta T

A technical discussion of this important parameter for calculating eclipse circumstances

Exact Eclipse Timings

Is it necessary to know them to the tenth of a second?

The movement of the Sun and Moon

We address VERY common questions that aren't at ALL obvious!