I found this site that seems to be so much easier to tell the time differences,
You can easily select the country and a close city to you so you can figure out the time for the Halloween party.
So it looks like people in Austrailia may find it difficult since it's like 3am, but part 2 with Clarapop at chatmaker.net is at 7am for you.
The best advice I can give is to at least be dressed so you can enter the costume competitions.
