In one quiz (Kwiz) I was asked to translate "five thirty AM" I wrote "cinq heures trente" assuming the 24 hour clock. This was apparently wrong because apparently we were talking about a 12 hour clock.
In the very next quiz (Kwiz) I was asked to translate "ten minutes to seven AM" so I wrote "sept heures moins dix du matin" which was also wrong because we were now apparently talking about the 24 hour clock (not apparently for any other reason).
Would it be possible to tell us whether we were talking about 12 or 24 hours on the clock?
My natural presumption is for 24 unless otherwise specified.