dix neuf heures trente - or sept heures et demi (du soir)
trois cent trente trois means 333 in French.
trente-trois
trente-six
"Il est neuf heures" in French translate to "It is nine o'clock".
7:36 p.m. is "dix neuf heures trente six". You may also hear, less frequently: "sept heures trente-six", and even (rarely) "sept heures trente-six de l'après-midi".
12:30 = douze heures trente or midi trente or midi et demiat night = minuit trente or minuit et demi orzéro heure trente
Huit heures trente.
"quatre heures et demi [de l'après-midi]" or "seize heures trente"
7:30 is "sept heures et demi" or "sept heures trente" in French.
dix neuf heures trente - or sept heures et demi (du soir)
Seven thirty am is "sept heures trente" or "sept heures et demie" in French.
7:36 am is "sept heures trente six" or "sept heures trente six du matin" in French. We only add 'du matin' when it is not obvious that you mean 'a.m.'
14:30 is quatorze heures trente in French.
"Two thirty" in French is "deux heures et demie."
dinner is at seven-thirty
Assuming you're talking about time, you could say "cinq heures trente" or "cinq heures et demi".