If you want to work VK/ZL/JA,Oceana,the best bands by far are 15/17m about an hour before the band closes. Last night I worked T32C and 3D2R on 10m. And a ZL1. On 17m I worked T32C,and NH6XK. My antenna is an 80m dipole at low height fed with 450 ohm feedline. Had some help with qro too...

The one country I never hear is BY. Maybe cause they run low power. But I can hear JA,HL,YB,UA0. Go figure!