A rare lunar phase called a Black Moon is expected to be in the night sky later this week. Here's when it will happen.

For a few days after the Black Moon, the sky will reveal a spectacular lunar sight at sunset on August 24 and August 25. The western horizon will display the thinnest silver crescent moon 30 to 40 minutes after sunset. Viewer will see the delicate silver arc, the moon's first reappearance after going dark the report stated.