My pet peeve is when signs indicating work on a building will be performed from 11pm to 6am it is usually written as "From 11pm to 6am (the next day)". No really?!?
In countries where you've to learn that the ordering of names can be different.. why not assume that clock times might be..... ah well. Nothing *wrong* with being very specific.
Now switch to a 30h clock :-D