Why is DisplayFormat DataFormatString not working?

Why are you using ApplyFormatInEditMode if you have set [Editable(false)]? All ApplyFormatInEditMode does is format the date if you have it in a text box or something for editing, which you probably won't because of the aforementioned.

I was able to get the date to display correctly using the following:

[DisplayFormat(DataFormatString = "{0:yyyy/MM/dd}")]
public DateTime Date 
{
    get
    {
        return DateTime.Now;
    }
    set
    {
        Date = DateTime.Now;
    }
}

and in the view (with resulting output):

@Html.DisplayFor(x => x.Date)        // 2013/05/23
<br />
@Model.Date                          // 23/05/2013 09:57:56
<br />
@Html.DisplayFor(x => Model.Date)    // 2013/05/23

Hope this helps.

Since You want to exclude the time to get Only Date: At Model:-

 [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy/MM/dd}"]
   public DateTime TheDate { get; set; }

At Views:-

    @Html.DisplayFor(model=> model.TheDate)
    @Html.JQueryUI().DatepickerFor(model => model.TheDate)

The tutorial of the following link may help you.It works for me.

http://ilyasmamunbd.blogspot.com/2014/02/jquery-ui-datepicker-popup-calendar.html

If you can't get it working on the model, you could try it on the view.

@Html.TextBoxFor(m => m.ValidFrom, "{0:dd/MM/yyyy}", new {maxlength = 10})