title: Joda Time does not take AM/PM into account when using hours between, and 12 hour time not working
body: <p>I am writing a program to calculate age difference in java using Joda Time, and when calculating hoursBetween(), it does not take into account AM and PM. Here's my code:</p>
  
  <pre><code>public static void main(String[] args) {
      Scanner scan = new Scanner(System.in);
      String DOB = "";
      String NOW = "";
  
      SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy hh:mm aa");
  
      Date dob = null;
      Date now = null;
  
      try {
  
          System.out
                  .println("Enter the date and time of your birth using the mm/dd/yyyy and the hh:mm AM/PM format: ");
          DOB = scan.nextLine();
  
          System.out
                  .println("Enter the date and time using the mm/dd/yyyy and the hh:mm AM/PM format: ");
          NOW = scan.nextLine();
  
          dob = format.parse(DOB);
          now = format.parse(NOW);
  
          DateTime dob1 = new DateTime(dob);
          DateTime now1 = new DateTime(now);
  
  
  
          System.out.print("You are ");
          System.out.print(Years.yearsBetween(dob1, now1).getYears()
                  + " years, ");
          System.out.print(Months.monthsBetween(dob1, now1).getMonths() % 12
                  + " months, ");
          System.out.print(Days.daysBetween(dob1, now1).getDays() % 60
                  + " days, ");
          System.out.print(Hours.hoursBetween(dob1, now1).getHours() % 12
                  + " hours, ");
          System.out.print("and "
                  + Minutes.minutesBetween(dob1, now1).getMinutes() % 60
                  + " minutes old!");
  
      } catch (Exception e) {
          e.printStackTrace();
      }
  }}
  </code></pre>
  
  <p>If my input for date of birth is "01/01/2014 12:00 AM" and my input for the current time is "01/01/2014 12:00 PM" the result is: "You are 0 years, 0 months, 0 hours, and 0 minutes old." When it should be 12 hours old. Is there a way to fix this? My guess is there is some way to implement the halfdayOfDay() method and invoke it on my <strong>DateTime</strong>'s, but I haven't found it...Thanks for any help!(By the way, I am using 12 hour day's for input, but while parsing it still accepts 13:00, when it should max out at 12:00!)</p>