I'm in New Zealand, and it's 11am 5th August here when the update has dropped. Now the chase is on, but we've missed out on almost half a day of the chase here.
I worked out, assuming the 2% per energy drop rate that I get just enough RC shards over 5 days to get to 7 stars, if I do the 3 50 crystal energy refreshes. But I don't get it for 5 days. Only 4 1/2 it seems.
So 7* RC cost more depending on your time zone. Thanks CG.