title: Change WPF Calendar control day name format
body: <p>I am currently using WPF Calendar control. The Day names are displayed as Su, Mo, Tu, etc. But I want those to be displayed as Sun, Mon, Tue, etc.. I found there is no data template property to achieve this one.</p>
  
  <p>Any suggestion will be greatly appreciated.</p>
  
  <p>Thanks</p>