I believe much earlier in statement there was the phrase "subject to change".
2 ways to get to same date of opening. 1) Announce shut down for short time period and keep extending it as necessary 2) Announce shut down for a very long time period and then shorten it if necessary
Where we end up, is unknown. Sept 1st is a long way away. Is it too long? Or too short? Time will tell.
Hopefully, the curfews we've had are not indicative of opening the borders. They just been adding and adding. Adding to a September open date will be ugly.