I was just searching through the park hours on Disneyland's website and it appears that there is a very odd opening hour on September 3.
Disneyland park will open at 10am and close at 11pm. Which I find odd because usually when the park closes that late, it opens earlier.
California Adventure also has odd opening hours. It will open at 11am and close at 9pm. 99% of California Adventure always opens at 10am.
Any ideas on why this may be?
Here's the link to see for yourselves.