Hi Charles,
This forum is good for posting comments about the "second half" of the book. And the
OCA forum for the OCA part of the book. We do have an
errata list. It's short because either we wrote an almost perfect book or because the book came out recently so people haven't had time to report many yet
.
I don't consider this particular question incorrect though. Oracle is very US focused when it comes to dates/times. Just like they make you learn how daylight savings time works in the United States, they assume a 12 hour clock. And to us 15:33 is called 2:33. The way the rest of the world operates with times is clearer, but here we are. As a result of this, Oracle doesn't ask about H as a formatting option. This also means on the real exam, they wouldn't be likely to give HH:mm as a choice in the first place. Also, on the bright side, this book simulates the style of the real exam where you know how many answers are correct. Which means if you are sitting there with an ambiguous questions about time, you can pick the one that makes sense with a 12 hour clock.
That said I made a note to say "using a 12 hour clock" if we do another edition of this book. And I'm giving you a
cow for bringing it up.