This week saw the celebration of Bubble Wrap Appreciation Day.
For ten years, fans from all over the world have set aside time to commemorate the plastic packing material by popping and twisting the wrap in unison.
This may sound unusual to some, but there are hundreds of official and unofficial national days all over the world that celebrate all manner of things.
However ridiculous, see if you can tell which days are real and which are just made up with our top quiz.
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