Answer :

MattD
24h00min - 9h30min = 14h30min
4h25min + 14h30min = 18h55min
It's 18:55
[tex]30\ minutes\ before\ \ \ 4:25\ \ \ is\ \ \ 3:55\\\\3:55\ am\ =\ 15:25\ pm\\\\9\ hours\ before\ \ \ 15:25\ pm\ \ \ is\ \ \ 6:55\ pm[/tex]