Rare Blue Moon Will Light up the Sky on HalloweenA blue moon refers to a full moon that occurs for the second time in a single month.
Blue Moon To Rise On HalloweenIt's the first instance of a blue moon in the Americas since MarchΒ 2018.
A Rare Blue Moon Will Light Up The Sky On HalloweenSpooky season is almost upon us β and this year it will be a little bit spookier. Katie Johnston reports.