asp.net mvc - Date not being displayed properly when using jQuery mask -

i trying use this jquery plugin input mask on asp mvc edit page. however, no matter value being stored in database, month displayed 2 zeros: 00/dd/yyyy. i've stepped through code in visual studio , checked actual value stored in database , have verified correct.

here jquery view. of other input masks work on page. $('#birthdate') 1 in question.

$(document).ready(function ($) {     $('#homephone').mask("(999) 999-9999? x99999");     $('#businessphone').mask("(999) 999-9999? x99999");     $('#mobilephone').mask("(999) 999-9999");     $('#faxnumber').mask("(999) 999-9999? x99999");     $('#birthdate').mask("99/99/9999");     $('#homezip').mask("99999?-9999");     $('#mailingzip').mask("99999?-9999");     $('#locationzip').mask("99999?-9999"); });      <div class="m-editor-field">         @html.editorfor(model => model.birthdate)     </div>     <div class="m-validator-field">         @html.validationmessagefor(model => model.birthdate)     </div> 

here jquery using on page.

<script src="http://code.jquery.com/jquery-1.8.3.js" type="text/javascript"></script> <script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js" type="text/javascript"></script> <script src="http://cloud.github.com/downloads/digitalbush/jquery.maskedinput/jquery.maskedinput-1.3.min.js"></script> 

edit

here field on model. have display set such

    [displayname("date of birth")]     [displayformat(dataformatstring = "{0:mm/dd/yyyy}", applyformatineditmode = true)]     public datetime? birthdate { get; set; } 

turned out issue w/the displayformat's dataformatstring. capitalizing month fixed problem :)

    [displayname("date of birth")]     [displayformat(dataformatstring = "{0:mm/dd/yyyy}", applyformatineditmode = true)]     public datetime? birthdate { get; set; }