JennyO:
Surely 12.00 am is earlier than 9.47am. At least it is in this neck of the woods. It would be midnight - the first minute of 1st October. Midday is 12.00pm
Yep, that's how they show it on the TV weather forecasts, but I don't like it. 12.00 am should be (in any logical system) one hour later than 11.00 am. i.e. Midday. Midnight should be 24.00, or 12.00 pm, or 0.00 am (one hour before 1.00 am)

CHEERS
Nigel (always ready to muddy the cool clear waters)