Here's the schedule for races on Speed Channel. I believe that all times are EST, so you might want to confirm the times they will be showing locally in the TV guide/listings.

Eastern Creek: Thu, Dec 9 12:00PM new
Pukekohe Park: Thu, Dec 9 1:00PM new
Hidden Valley: Thu, Dec 16 12:00PM new
Barbagallo: Thu, Dec 16 1:00PM new
Queensland: Thu, Dec 23 12:00PM new
Winton: Thu, Dec 23 1:00PM new
Oran Park: Thu, Dec 30 12:00PM new
Sandown: Thu, Dec 30 1:00PM new