xkcd #3232: Countdown Standard
Title text:
Anyone who is caught counting ‘three … two … one … zero … GO!’ will be punished with a lifetime of eating only ISO standard food samples.
Transcript:
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Source: https://xkcd.com/3232/
Excellent point. Same for most European countries, I think.
Another date confusion things is weeks. Europeans use week numbers a lot (“I’m on vacation weeks 34-37”) but that’s very rare in the US. And the week numbers aren’t (always) the same anyway. In the US we use “I’m on vacation the week of <date>”, which honestly is a lot easier to understand without referencing a calendar.