Advent Calendar
A grid of numbered doors that open one a day. Behind each door goes a message, an image, a link or a code to copy. Any start date and 1 to 31 doors; they open at each visitor’s own midnight, or at one midnight in a zone you name, and a locked door tells the visitor the date it opens.
Advent calendar
24 doors
Twenty-four doors in order. This demo starts six days before today, so in any month the first six doors open, the seventh is today’s, and every locked door says the date it opens.
Twelve days of Christmas
12 doors
The same component as twelve days, scattered like a paper calendar, with every door opening at midnight London time for every visitor at once.