Monday 19th August 2024
    Difficulty: Very hard

    Blue Moon (Quiz #640)

    Photo by <a href="https://unsplash.com/@eileenrollinphoto?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Eileen Rollin</a>
    Photo by Eileen Rollin (Unsplash)

    There are two different definitions for a blue moon.
    A seasonal blue moon is the third full moon of an astronomical season that has four full moons.
    A monthly blue moon is the second full moon in a calendar month with two full moons.
    The original definition of a blue moon is the seasonal one, and that's what you can see tonight.

    1. How often does a monthly blue moon occur, on average?

    2. Which of these is credited by TimeAndDate.com as popularising the monthly definition of a blue moon with the general public?

    3. Who had a number 1 hit in 1961 with the song "Blue Moon"?

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