Unity3D 4.6 GUI Clock Script

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class Clock : MonoBehaviour {
    Text clocktxt;
    private float RawTime = 0.0F;
    private float ClockHR = 0.0F;
    private float ClockMN = 0.0F;
    private string ClockAMPM = "AM";
    private int ClockSpeedMultiplier = 1;




    void Start () {
    clocktxt = gameObject.GetComponent<Text>();
    }

    void Update () {

            RawTime += Time.deltaTime * ClockSpeedMultiplier;
            ClockHR = (int)RawTime / 60;
            ClockMN = (int)RawTime - (int)ClockHR * 60;

        if (RawTime >= 1440) {
            RawTime = 0;
        }

        if (RawTime >= 720) {
            ClockAMPM = "PM";
            ClockHR -= 12;
        }
        else {
            ClockAMPM = "AM";
        }

        if (ClockHR < 1 ) {
            ClockHR = 12;
        }

            clocktxt.text = "RawTime = " + RawTime.ToString("0000") + "   Time = " + ClockHR.ToString("00")     + ":" + ClockMN.ToString("00") + ClockAMPM;
}
}