using System;

using NodaTime;

​

public class Program

{

    public static void Main()

    {

        void dateTimeOpResult(string zones, int ly, int ld, int lmo, int lh, int lmi, Period period)

        {

            var zone = DateTimeZoneProviders.Tzdb.GetZoneOrNull(zones);

            var local = new LocalDateTime(ly, ld, lmo, lh, lmi, 0, 0);

            var before = zone.AtStrictly(local);

            var after = zone.AtStrictly(local.Plus(period));

            Console.WriteLine("Adding " + period + " in zone: (" + zones + ")\n s:\t" + before + "\n e:\t" + after + "\n");

        }

        dateTimeOpResult("Pacific/Apia", 2011, 12, 29, 5, 00, Period.FromDays(2));

        dateTimeOpResult("Europe/Zurich", 2023, 3, 26, 1, 30, Period.FromDays(1));

        dateTimeOpResult("Europe/Zurich", 2023, 3, 26, 1, 30, Period.FromHours(2));

        // throws error

        // dateTimeOpResult("Pacific/Apia", 2011, 12, 29, 5, 00, Period.FromDays(1));

    }

}