If you’re dreading the deadline for filing your taxes in the U.S., the sky will provide a distraction in the early morning hours of April 15. That’s when we’ll experience the first total lunar eclipse in 28 months.

Observers throughout North and South America will have the prime views of this eclipse. Those in the western Pacific will miss the first half of the eclipse because it occurs before the Moon rises. Likewise, most of Europe and Africa will experience moonset just as the eclipse begins.

A lunar eclipse occurs when the Sun, Earth, and the Moon line up. During such times, the Moon passes through Earth’s shadow, and where it passes determines the type of eclipse we’ll see.

Our planet’s shadow has two parts: a darker inner section called the umbra and a lighter outer region called the penumbra. When the Moon passes through only the penumbra, we experience a penumbral eclipse. When only some of it passes through the umbra, we see a partial eclipse. Sometimes, however, all of the Moon passes through the umbra, creating a total lunar eclipse. That’s what’s happening on the 15th.