July’s full moon, known as the Buck Moon, will be at its fullest Sunday (July 21) when seen from North America. The moon will also appear bright and full on Saturday and Monday.

Native American tribes named July’s full moon the Buck Moon after the new antlers that emerge from a buck’s forehead this time of the year, according to Time and Date. Other traditional names for July’s full moon include the Thunder Moon and the Hay Moon. The Anishinaabeg people call it Miin Giizis, or Berry Moon, according to the Center for Native American Studies.