The full harvest supermoon will shine brightly in the night sky Tuesday evening. A partial lunar eclipse, with a “bite” taken from the moon, will also be visible.

On the night of September 17, the Earth, sun and moon will align to create three celestial events. In many places, depending on the time zones, people will have the opportunity to witness a harvest moon, a supermoon, and a lunar eclipse as the full moon rises. Here’s what you need to know about these events: