using System;

using System.Globalization;

public class Program

{

      private double GetNextInterval()

        {

           string  timeString ="9:30 AM";

            DateTime t = DateTime.Parse(timeString);

            TimeSpan ts = new TimeSpan();

            //int x;

            DateTime p = System.DateTime.Now; // initialize one time static datetime 

            ts = t - p;

            if (ts.TotalMilliseconds < 0)

            {

               // ts = t.AddDays(1) - System.DateTime.Now;//Here you can increase the timer interval based on your requirments.   

                ts = t.AddDays(1) - p; //modify by Pawan to run daily service ... Here you can increase the timer interval based on your requirments.   

            }

            return ts.TotalMilliseconds;

        }

    public static void Main()

    {

        System.Globalization.CultureInfo provider = System.Globalization.CultureInfo.InvariantCulture;

        //var c = CultureInfo.CreateSpecificCulture("pt-BR");

        // Defining Format and Testing it via "DateTime.ToString(format)"

        Program obj=new Program();

        string format = "MM/dd/yyyy HH:mm:ss tt"; 

        string dtNow  = DateTime.Now.ToString (format);

        Console.WriteLine ("Date Time Now : " + obj.GetNextInterval());

        // Trying to Parse DateTime on the same Format defined Above

    }

    public static void ParseDate (string value, string[] masks, out DateTime result)

    {   

        DateTime.TryParseExact(value, masks,

            System.Globalization.CultureInfo.InvariantCulture,

            System.Globalization.DateTimeStyles.AssumeUniversal

            | System.Globalization.DateTimeStyles.AdjustToUniversal

            | System.Globalization.DateTimeStyles.AllowInnerWhite

            | System.Globalization.DateTimeStyles.AllowLeadingWhite

            | System.Globalization.DateTimeStyles.AllowTrailingWhite,

                out result);

    }

}