The Longest Day of the Year.

Watching "Want to be a Millionaire" and the question was asked
"In Australia, in what month is the longest day of the year?"

Traditional it has been the 22nd Dec and the shortest day is
June 22nd, but the girl working it out, was given, Nov, Dec,
Jan and Feb and she said it would only be a quess, but she
knew it was not November as she was born that month and as
January is the middle of Summer it would have to be then.

Of course she was told she was wrong, but it started me thinking.

She is right January is the middle of Summer, so logically
wouln't it have the longest day?

Surely the weather bureau has the 'correct' answer, as they know
when the sun rises and when it sets. Must look into this further.