public enum YogaTime
{
    [Display(Name = "5:00 AM")]
    Five,
    [Display(Name = "5:15 AM")]
    FiveFifteen,
    [Display(Name = "5:30 AM")]
    FiveThirty,
    [Display(Name = "5:45 AM")]
    FiveFortyFive,
    [Display(Name = "6:00 AM")]
    Six,
    ...
    ...
    ...
    [Display(Name = "9:00 PM")]
    Nine,
}

<div class="col-sm-6" style="padding-left: 0px; padding-right: 0px;">@Html.EnumDropDownListFor(m => m.StartTime, new { @class = "form-control selectpicker", @name = "StartTime" })</div>