Woldor, таймер по местному времени
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8" />
<title></title>
</head>
<body><div id = 'show'></div>
<script type="text/javascript">
function two(a) {
return (9 < a ? "" : "0") + a
}
function formatTime(a) {
a = Math.floor(a / 1E3);
var c = Math.floor(a / 60),
d = Math.floor(c / 60);
a %= 60;
c %= 60;
return two(d) + " : " + two(c) + " : " + two(a)
}
function Time() {
var a = new Date, c = [7, 15, 23, 7], d = [], e = a.getDate() + 1, b = 0;
for (; b < c.length; b++)
a.setHours(c[b], 0, 0, 0),
3 == b && a.setDate(e),
d[b] = a.getTime();
for (b = 0; b < c.length && !(a = d[b] - (new Date).getTime(), 0 < a); b++);
document.getElementById("show").innerHTML = "До " + c[b] + " осталось " + formatTime(a);
window.setTimeout(Time, 1E3)
};
Time()
</script>
</body>
</html>