What does "Once in a Blue Moon" mean?
Hello, Sofia Loannou!
This phrase refers to something extremely rare happening. It can be a natural phenomenon just like seeing other planets from our sky. “The possibility of seeing another planet from Earth is once in a blue moon.”
This phrase can also describe someone’s action happening occasionally. For example, “She cleans her room once in a blue moon that’s why she can’t invite her friends to her room.”