A viral claim making the rounds online and on social media claims "the world to go dark for six minutes" on Aug. 2, intimating that it won't happen again for 100 years. It won't. How could it? There will be no global blackout. However, something special connected with darkness will happen on Aug. 2 in a couple of years.

What's likely fueling the confusion is a genuinely spectacular event coming up on Aug. 2, 2027, which we've been rightly calling the "eclipse of the century." On that day, the moon will completely block the sun for up to 6 minutes and 22 seconds, delivering the longest period of totality on land in the 21st century

For comparison, the April 8, 2024, total solar eclipse across Mexico, the U.S. and Canada offered a maximum totality of 4 minutes and 28 seconds — already considered unusually long.

It may seem like hyperbole, but the total solar eclipse on Aug. 2, 2027, is being dubbed the "eclipse of the century" for good reason. It will bring the longest totality on land of the entire 21st century (since 1991, in fact) and will be the longest remaining totality until July. 16, 2114. So while the "won't happen again for 100 years" assertion is false, 2027's totality is the longest for 87 years.

The path of totality in 2027 — where it will "go dark" (though it's actually more like a 360-degree twilight) — is wider than usual, because the moon will be at its closest, but it's still narrow on a global scale. On Aug. 2, 2027, the path will be about 160 miles (258 kilometers) wide and surge across 9,462 miles (15,227 km) of Earth's surface. That's about 1.5 million square miles (2.5 million square km) — a lot, but a tiny fraction of Earth's 197 million square miles (510 million square kilometers).

The path of totality will cross parts of 11 countries, mostly across North Africa and the Middle East. The total solar eclipse will be visible in Spain, Gibraltar, Morocco, Algeria, Tunisia, Libya, Egypt, Sudan, Saudi Arabia, Yemen and Somalia. A partial eclipse will be visible across most of Africa, Europe and southern Asia. For the rest of the world — including North America — it will be business as usual.