Need help with 24 Hour timing script.

Im not asking anyone to write a code for me before anyone thinks this, I already have a timing script that counts the hours and resets at hour 23 to 0.

Im asking for what the code snippets for changing the scenes ambient lighting and skybox setting, so I can insert them at appropriate times for the times of the day.

I dont know them

var Hour = 0;

function Start () {
    InvokeRepeating("time", 0, 60);
}

function time () {


 Hour = Hour + 1;

}

function Update () {

 if(Hour > 23){
 Hour = 0;
 }
 
 guiText.text = ("Hour:"+Hour);
}

this is the code for anyone wondering.

This pretty much does all the sky and clouds animation all in one amazing package:

http://www.pixelstudio.nl/?p=138

Here is a link to the sun light wiki page, has some stuff about changing the light and colour of the sun:

This one is a link to the skybox blend wiki page:

This guy is selling a tutorial all about making a day/night cycle:

http://forum.unity3d.com/viewtopic.php?t=51106&highlight=night+cycle

Thanks to spinal jack for the links to these resources.