using System;

public class Program

{

    public static void Main()

    {

        DateTime todayMidnightUTC = DateTime.SpecifyKind(new DateTime(2022, 3, 15, 0, 0, 0), DateTimeKind.Utc);

        var dateTimeUnspecified = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Unspecified);

        var timeZone = TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");

        var utcDateTime = TimeZoneInfo.ConvertTimeToUtc(dateTimeUnspecified, timeZone); 

        var nowPacific = TimeZoneInfo.ConvertTime(dateTimeUnspecified, timeZone); 

        var nowUTC = DateTime.UtcNow;

​

        Console.WriteLine("NowUnspecified: " + dateTimeUnspecified);

        Console.WriteLine("NowPacific: " + nowPacific);

        Console.WriteLine("NowUTC: " + nowUTC);

        Console.WriteLine("--------------------------");

        var oneDayAgoPacific = nowPacific.AddDays(-1);

        Console.WriteLine("OneDayAgoPacific: " + oneDayAgoPacific);

        var oneDayAgoUTC = DateTime.UtcNow.AddDays(-1);

        Console.WriteLine("OneDayAgoUTC: " + oneDayAgoUTC);

        Console.WriteLine("--------------------------");

        if (oneDayAgoUTC.AddHours(-1) > oneDayAgoUTC) {

            Console.WriteLine("25 hours ago is less than oneDayAgoUTC in the past");

        } else {

            Console.WriteLine("25 hours ago is more than oneDayAgoUTC in the past");

        }

        if (oneDayAgoUTC.AddHours(-1) > oneDayAgoPacific) {

            Console.WriteLine("25 hours ago is less than oneDayAgoPacific in the past");

        } else {

            Console.WriteLine("25 hours ago is more than than oneDayAgoPacific in the past");

        }

    }

}