public static void Main()
DateTime thisDateTime = Convert.ToDateTime("2019-04-01 4:40:00 PM");
var curTz = TimeZone.CurrentTimeZone;
Console.WriteLine(curTz.StandardName);
TimeZoneInfo thisTz = TimeZoneInfo.FindSystemTimeZoneById("GMT Standard Time");
bool isSupportDayLight = thisTz.SupportsDaylightSavingTime;
bool isDayLightPeriod = thisTz.IsDaylightSavingTime(thisDateTime);
Console.WriteLine("Is that region supports Day Light Savings");
Console.WriteLine(isSupportDayLight);
Console.WriteLine("Given date " + thisDateTime + " come under Day Light Saving Time");
Console.WriteLine(isDayLightPeriod);
Console.WriteLine(TimeZoneInfo.Local);