using System;

public class Program

{

    public static void Main()

    {

        var dateTime = CalculateDateTimePumpedUtc(2023, 3, 16, 0, 0);

        Console.WriteLine(dateTime);

    }

    public static DateTime CalculateDateTimePumpedUtc(int year, int month, int day, int hours, int minutes)

        {

            TimeZoneInfo estTimeZone = TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time");

            var utcOffset = estTimeZone.BaseUtcOffset;

            var dateTimePumped = new DateTimeOffset(

                year,

                month,

                day,

                hours, minutes, 0, utcOffset);

​

            return dateTimePumped.UtcDateTime;

        }

}