Start my Clock script at 6am?

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class ClockScript : MonoBehaviour
 {
     Text clocktxt;
     public GameObject amWord; // just am word for dispaly
     public GameObject pmWord; // just pm word for display
     public GameObject amWordWhite; // just am word for dispaly
     public GameObject pmWordWhite; // just pm word for display
     private float RawTime = 0.0F;
     private float ClockHR = 0.0F;
     private float ClockMN = 0.0F;
     private int ClockSpeedMultiplier = 2;
 
 
 
 
     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)
         {
             amWord.SetActive(false);
             pmWord.SetActive(true);
             amWordWhite.SetActive(true);
             pmWordWhite.SetActive(false);
             ClockHR -= 12;
         }
         else
         {
             amWord.SetActive(true);
             pmWord.SetActive(false);
             amWordWhite.SetActive(false);
             pmWordWhite.SetActive(true);
         }
 
         if (ClockHR < 1)
         {
             ClockHR = 12;
         }
 
 
         clocktxt.text = ClockHR.ToString("0 0 ") + ":" + ClockMN.ToString(" 0 0");
     }
 }

Any help would be appreciated!! It currently starts at 12am...