Blue moons are a phenomenon where there's an extra full moon in a calendar year outside of the usual 12. ... "There's going to be a full blue moon on 31 October 2021," reads an Oct. 18 Facebook post.

Tiffany’s 2021 Holiday Advent Calendar Reproduces a 1982 Painting by Jean-Michel Basquiat The painting is the centerpiece of the new armoire-like calendar, which is stocked with 24 blue gift boxes.

This definition refers to the second full moon in a calendar month with two full moons. The time between full moons is roughly 29.5 days, but most calendar months are slightly longer.

Related: The August 2021 full moon is a Blue Moon. Here's why. $89.99 at Amazon. ... While the term Blue Moon is commonly reserved for the second full moon of a calendar month, ...

Skywatchers can look forward to various special celestial events in 2021, including three supermoons, a blue moon, and two lunar eclipses. (Ashlee Espinal/The Jersey Journal) EJA ...

Watch it on Saturday, August 21, 2021 and you’ll see the “Blue Moon” close to the Solar System’s brightest planet—Jupiter. The giant planet will hang about 4° to the upper left of the ...