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Hi! I am trying to make a website where the viewer enters a home page, but after a certain time i want to "unlock" the full site.

For example; if a person enters a site at 13.45, there will not be much to do. But if the person refresh the website at 14.00 exactly. There will be a lot of new stuff to do.

How do i write the code to show new thing after a certain time?

thank you for all help