Bootstrap compatible ASP.NET MVC4 EditorTemplate for DateAndTime class, using datepicker and timepicker controls

AuctionViewModel.cs

using System;
using System.ComponentModel.DataAnnotations;
using Auction.Web.Domain.Models;
using Auction.Web.Utility;

namespace Auction.Web.Areas.Seller.Models
{
    public class AuctionViewModel : Domain.Models.Auction
    {
        public AuctionViewModel(Domain.Models.Auction auction)
            : base(auction)
        {
        }

        public AuctionViewModel()
        {
            // default values for new form
            var now = DateTime.UtcNow;
            this.Start = (now + TimeSpan.FromDays(1)).RoundDown(15);
            this.End = (now + TimeSpan.FromDays(2)).RoundDown(15);
            this.OpeningTime = new TimeSpan(8, 0, 0);
            this.ClosingTime = new TimeSpan(22, 0, 0);
            this.OpenOnSaturdays = true;
            this.OpenOnSundays = false;
            this.State =  AuctionState.Planned;
            this.Type = AuctionType.ExitAuction;
        }

        [Required]
        [Display(Name = "Start datum en tijd")]
        public DateAndTime StartDateAndTime
        {
            get
            {
                //return new DateAndTime((DateTime)this.Start);
                return new DateAndTime((DateTime)this.Start.ToLocalAuctionTime());
            }
            set
            {
                this.Start = value.DateTime;
            }
        }

        [Required]
        [Display(Name = "Eind datum en tijd")]
        public DateAndTime EndDateAndTime
        {
            get
            {
                //return new DateAndTime((DateTime)this.End);
                return new DateAndTime((DateTime)this.End.Value.ToLocalAuctionTime());
            }
            set
            {
                this.End = value.DateTime;
            }
        }
    }
}