Usually that stuff is Dawn and dusk time frames and there's not an actual like physical am or pm and time on it
I believe the official time is at least sunrise. There are areas where there are steep drop-offs - as in more than 15 feet down to rocks. It would not be safe at night.
There is no gate to keep you out but there probably are park or trail hours. Can't see anything before the sun comes up anyway.
5am to 10pm
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