Hi Marianne. We're always a day ahead in Australia. Rather comically, a few years ago when serial Doomsday prophet, Harold Camping, predicted that the world was going to end on a particular date, a few kids on ask.com wanted to know if Australia and New Zealand were still here. When we assured them that it was all OK they were able to go to bed without worrying that they might not wake up.
And Hello Virginia. Yes, that's the Sydney Harbour Bridge. It was opened just five years before the Golden Gate Bridge.
And Tink, I went into some detail about this on Quora. My answer also explains why kangaroos are marsupials. https://goo.gl/h1HiGq