Assalamualaikum,
My solution has been to periodically refresh the page using a single line of JavaScript.
// Reload the page every minute to update times
setTimeout("location.reload(true);", 60000);
An improvement on this will be to reload only the prayer times without reloading the entire page.
Also, as an extra tip, to reduce the risk of burn-in on LCD screens you can animate the section or div that your prayer table is in so that it moves gradually around the screen. You can make this very subtle so that it’s not obvious to the viewer but it will help reduce damage that could happen to the screen over time.
Salaam,
Ibrahim
