Schedule variant page

I was wondering if there was a way to schedule a variant of the landing page.
We have an event and when the early bird ticket sale ends we would like the normal registration button to appear and grey out the early bird ticket button.
This happens at midnight on a Friday and would like it to auto switch rather than pushing it live at midnight.


Just a rough idea: Write JavaScript, that gets the current date and time from a trusted source (e.g. NTP server) and grey out the button accordingly (or strike text or whatever). AFAIK there is no scheduling in Unbounce’s pages.