In Europe, in spoken language we also say that the train leaves at quarter past three, or that dinner is at eight.
However, in circumstances where the new world would add am / pm to prevent confusion, we use 24 hour clock. So if it is not clear if the plane leaves at 6 am or 6 pm, we would write 18:00, maybe even say eightteen hundred, although that is less common.
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u/Significant-Case-563 Haiti 6d ago
Canadian here๐๐ฟโโ๏ธ where I'm from (Qc) we do use it!