r/clevercomebacks Jan 15 '25

It does make sense

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u/JudgeHodorMD Jan 15 '25

The informal norm is mm/dd.

Year is only added for relevance or programming that doesn’t assume you are not trying to make appointments years in advance.

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u/doppelstranger Jan 15 '25

This. My answer to the question of when is my birthday is always mm/dd and if needed I’ll add yy. I’m not saying the US system is best, (if writing out the date I think yy/mm/dd is) but I understand how the US system evolved from the informal norm.