Step outside Sunday night and you’ll be able to catch a glimpse of the total lunar eclipse. Late in the evening, the full moon is slated to pass directly into Earth’s shadow cast by the sun, illuminating the moon a brilliant red. According to NASA, the moon will begin to enter Earth’s shadow – also known as the umbra – around 10:30 p.m. ET on Sunday. Totality – or the period when the moon is fully immersed in Earth’s shadow – will begin at about 11:30 p.m. ET and last for roughly an hour and a half. The eclipse ends just before 2 a.m. ET Monday morning. As it is a lunar eclipse, it is safe to view with the naked eye.

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