Stargazers in the Eastern Hemisphere will get the chance to watch the moon flush red during a total lunar eclipse Sunday night or Monday morning.

Lunar eclipses arise when Earth’s shadow swallows all or part of the moon, obscuring its surface. A total lunar eclipse is the most dramatic version of the event and is often referred to as a blood moon.

Where and when will the eclipse happen?

The eclipse will be visible across Asia, Australia, New Zealand and much of Europe and Africa on Sunday night into Monday morning, local times.

Viewers in most of the Western Hemisphere, including North and South America, will miss the event. That’s because it is occurring during their daytime, between 11:26 a.m. and 4:56 p.m. Eastern time on Sunday, according to the U.S. Naval Observatory, and the moon is below the horizon.

Lunar eclipses happen in phases. The moon will begin to creep into the outer part of Earth’s shadow, called the penumbra, causing its face to slightly dim. This first phase occurs at 6:26 p.m. in Cairo, Jerusalem and Moscow; at 8:56 p.m. in New Delhi; at 12:26 a.m. in Tokyo and Seoul; and at 1:26 a.m. in Sydney.

An hour later, the moon will enter Earth’s umbra, the darkest part of its shadow, during which a growing portion of its surface will be hidden from view.