Tomorrow's full moon will have the added bonus of a partial lunar eclipse. The event will offer people in North America, South America, Africa and Europe an opportunity to see some of the moon's exterior concealed by Earth's shadow. The full moon is also the supermoon harvest moon. The partial lunar eclipse starts tomorrow night at 8:41 Eastern time, when the moon will begin joining the Earth's shadow. The full effect will not be completely noticeable until 10:13 Eastern time when the rim of the moon is covered, according to NASA. About eight-percent of the moon's exterior will be in full shadow at 10:44 p.m. Eastern time and is safe to watch without specialty eyewear.