import java.util.*;
import java.lang.*;
import java.text.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
	    Date date = new Date();
	    Calendar cal = Calendar.getInstance();
	    cal.setTime(date);
	    cal.set(Calendar.HOUR_OF_DAY, 6);
	    cal.set(Calendar.MINUTE, 0);
	    cal.add(Calendar.MINUTE, 65);
	    
	    DateFormat df = new SimpleDateFormat("HH:mm", Locale.ENGLISH);
	    df.setTimeZone(TimeZone.getTimeZone("GMT"));
	    
	    String time = df.format(cal.getTime());
	    
	    System.out.println(time);
	}
}