Been communicating with PS_Mouse about this via Steam chat. We're looking at Saturday 8pm PDT / Sunday 1pm Aussie Time. My understanding is that they're gaining an extra hour due to daylight savings that day, so we should try to be extra careful that these times are actually the same for us!

Ditto to what Fiskbit said:
Sunday, 6 April @ 13:00 AEST (UTC +10) | Saturday, 5 April @ 20:00 PDT (UTC -7) | Sunday, 6 April @ 03:00 GMT

AUS wins 4-0.