He already had an agreement for the factory to open in 1 week. https://www.nytimes.com/2020/05/09/business/coronavirus-elon...

“We were working on a lot of policies and procedures to help operate that plant and quite frankly, I think Tesla did a pretty good job, and that’s why I had it to the point where on May 18, Tesla would have opened,” Mr. Haggerty said. “I know Elon knew that. But he wanted it this week.”

so 1 more week beyond today is what the officials were planning on.