It had me stumped too Eric but I did a search on their website for Astronomy and Sydney and found the URL. I've spoofed my URL for Melbourne and it seems to work. Give this a try:
http://wwwa.accuweather.com/world-astronomy.asp?partner=accuweather&t raveler=0&locCode=OCN|AU|VIC|MELBOU RNE&metric=1
Thanks for the tip Ken. Great site.
Cheers,
Greg