[metmom]

I thought it was called a blue moon when it was the second full moon for any particular month.

There was a full moon on Aug 1.

[from occupied ga]

You’re correct. Blue moon defined as second full moon in a calendar month.

[BereanBrain]

when you hear the phase “once in a blue moon” it refers to we call a FULL moon that occurs twice in a single month a “blue” moon.

There are other types of “moons” like the harvest moon, etc.

But also a type referring to the color of the moon for example “blood” moon.
So, if parts of the moon can be seen to be blueish, it can be called a blue moon. It may so happen that that occurs WITH a traditional blue moon.

Don’t trust me (or google) GO OUT and look at it tonite about 9 pm and report back what you see with your own stinkin’ eyes!