public void setSimulationStartTime(string timeOfDay) {
//separate the string into parts.
string hours = new string(timeOfDay.ToCharArray(0,2));
string minutes = new string(timeOfDay.ToCharArray(3,2));
string seconds = new string(timeOfDay.ToCharArray(6,2));
string ampm = new string (timeOfDay.ToCharArray(9,2));
//convert to ints.
int hourSeconds = int.Parse(hours) * 3600;
int minuteSeconds = int.Parse(minutes) * 60;
int secs = int.Parse(seconds);
if (ampm.ToLower() == "pm") hourSeconds += 43200; //add 12 hours worth of seconds if pm.
//add up the seconds.
int totalSecs = hourSeconds + minuteSeconds + secs;
//set new.
timeTracker.setSimStartTime(totalSecs);
Debug.Log(timeTracker.getSimStartTime());
}