Create a dynamic Tv guide in PHP

I want to creat a simple Tv Guide for my Tv site.. I have the guide that looks like this

My question is simp开发者_开发百科le.. how do I set that at 5.30 the current program will be Program 1 (somthing like.. You are currently watching program 1) Please remember timezones in your answer

You can write a JavaScript which use the

var date = new Date();
var time = date.getHours() + '.' + date.getMinutes;

and with it, can make an ajax call to get the actual tv-program's name from your php script.