I just made one of them. http://chrischerry.name/coachella
Check out the source for some ideas on how to do this. However, the “appointment date” is not indicated by the unix timestamp, but it is easy enough to do.
var date = new Date(unix_timestamp*1000);
Its multiplied by 1000, because javascript Date () wants time in milliseconds, and unixtimestamps want seconds.
source share