Sundarpatan

Afternoon my fellow hunters!

Me and good buddy of mine are looking to take tomorrow off from work (Reasonable reason to take a day off right??) which is the 18th here in Australia. We understand the map has been confirmed for the 18th of June. What i am worried about is "18th June release". For us Aussies will we be looking at the map being playable tomorrow? or have we both jumped the gun here in terms of getting the 18th off when really it will be the 19th when the map is playable?