Leave at 9pm or earlier for your next visit. Glad I could help!
Oh that's a shame that you travelled so far and didn't get to see it. Hopefully you can stay another day - it's well worth it. It's interesting.... where did you find the 12am info? I am seeing 11:30 on the website: https://www.rockefellercenter.com/blog/2018/11/08/2018-rockefeller-center-christmas-tree/
Plan better
I saw midnight is shutoff also right at the top of this website.
Thanks! Your answer is awaiting moderation.