How to represent multiple field in drop down in same time

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MVC4

MVC5

entity-framework

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I have model calender as following :

[Table("Calender")]
    public partial class Calender
    {
        public Calender()
        {
            this.schedule = new List<Schedule>();

        }
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]

        [Key]
        public int DayNum { get; set; }
        [Required]
        [StringLength(50)]

        public string DayName { get; set; }
        [Required]
       // [StringLength(50)]
        public int FromTime { get; set; }
        [Required]
        public int ToTime { get; set; }

        public bool Active { get; set; }
        public virtual ICollection<Schedule> schedule { get; set; }





    }
}

I need to show drop down list with

DayName(FromTime-ToTime)

meaning i need to show my format values in drop down as following :

Saturday(2-5)

Sunday(2-4)

Friday(3-5)

as DayName(FromTime-ToTime) inside dropdown

I can represent DayName as following :

ViewBag.DayNum = new SelectList(db.calenders, "DayNum", "DayName");

But cannot represent format DayName(FromTime-ToTime)

How i represent this format in controller and view ?

What I have tried:

How to represent multiple field in drop down in same time