Hi Kinga,
I have some availibilities for my team.

Friday, Dec. 10th
New York: 5 or 6 PM
New Orleans: 4 or 5 PM
London: 10 or 11 PM
Sydney: 9 or 10 AM, Dec 11

Also Available

Saturday, Dec 11th
New York: 6, 7 PM
New Orleans: 5, 6 PM
London: 11 PM, 12 AM
Sydney: 10, 11 AM Sun Dec 12

If any of these times work you can go ahead and book it.
Thanks,
Blue/Dustin