Show hide sections based on date/time

I'm looking for a way to show/hide sections in an event article so that I can offer visitors to register for an event up until 1-3 days before the event starts, and after that instead of the register form show another section saying something like "Registration is now closed".

I have seen a couple of discussions on the forum touching this but, I believe, not exactly what I'm after. 

It should be fairly straightforward to adjust the messaging according to the date/time. If you'd like help from the community, please provide more details of exactly what you want to show and how you want to change it. A link to the page where you're trying to do this will really help too.

On 7/17/2023 at 6:39 PM, paul2009 said:

It should be fairly straightforward to adjust the messaging according to the date/time. If you'd like help from the community, please provide more details of exactly what you want to show and how you want to change it. A link to the page where you're trying to do this will really help too.

Sure, 
See the page here

What I was looking for was a solution to hide the section in the form 3 days before the start date, and instead display another section containing wording about the registration being closed.