What are the hours

9am to 9pm all depends on weather and private events

It opens at 9 am and closes at 9 pm

I would recommend checking their website for the specific dates you plan on visiting. Hours may vary per park per day. You can find the park operating hours here: https://www.universalorlando.com/web/en/us/plan-your-visit/hours-information/park-hours/index.html