I'm kind of baffled by the confusion about how many days passes will be extended by. It's very simple - count out how many days you should have had access to the park, but they were closed. That means you don't count out days that you were blocked out, days your pass would have been expired, etc. Just days when your AP was active and good to get into the park, but they were closed - add all those days up.
Then. once they reopen and start the clock for passholders (jury is still out on when that will happen with reservations and whatnot, but we'll find out eventually), you add that number of days you came up with to your pass - and again, you're skipping counting block out days since you still don't have access then. So if you have a silver pass, those days don't start being added until August 7, when your block out expires. You are getting the same exact number of days in the park - you just have to do the math.
And I know this doesn't work for some of us with medical issues or who live far away - I'm just talking about the confusion about how the math works. It's way more simple than people are making it out to be.