[pjmlp]

> It's like that everywhere in Europe. Nobody says 'see you at fifteen'.

Sorry but that is not how it works in Portugal.

We usually say 15.00 unless it is clear from context that 3 is 15.00.

For example if I am scheduling to meet for a coffee at 3, it surely isn't 3 AM.

Now if I am talking about meeting for something else at 10, and it isn't clear from context, usually I will be asked if I mean 10 or 22.

Besides AM / PM is something that we have to deal with in English based devices, that is it.