It means 4:30 (4 ourand a half) or 4:30 Am/Pm
"quatre heures"
'demi' is the half of something, as in six heures et demie (6:30). It can also mean a 25 cl glass of draft beer.
"Il est deux heures et demie" in French means "It is two thirty," referring to the time being half past two o'clock.
le quatre means 'the (number) four'
If you mean a number then it's douze virgule trenteIf you mean time, either douze heures trente, midi trenteor midi et demie
dans les quatre means 'in the four' in English.
It lasts two and a half hours (it should be 'demi'), it finishes. (it's not very logical)
Anglais à huit heures means 'English (class) at eight o'clock'.
If you mean demie lavato, NO! X
12 Heures is 'midday' or 'noon' in English. Pile means 'sharp'
Quatre chats en noir means 'four cats (dressed) in black' in English.
" il est [...] heures cinquante neuf " means " it's one minute to [...]"