Light from the setting sun reflects off the One World Trade Center tower as the moon rises in its waxing stage seen from The Heights neighborhood of Jersey City, N.J., Wednesday, July 29, 2015. The moon will reach its full stage Friday in a phenomenon known as the blue moon. (AP Photo/Julio Cortez)

Rare Blue Moon Comes Friday

The July 31 appearance of the month’s second full moon will be the first such occurrence in the Americas since August 2012. Every month has …