We were there sunday and they closed at 8 pm, I go to the website and use the drop down menu for park hours and it gives you a calendar with the opening and closing hours of every operating day.
Website shows schedule for everyday and upcoming holidays
It closed at 8 last time we were there. They do post the current hours online.
8PM
8pm through the last weekend in March then they'll be open til 9pm after :)
8pm usually
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