using System.Collections;
using System.Globalization;
using System.Threading.Tasks;
using System.Collections.Generic;
using System.Text.RegularExpressions;
public static void Main()
Console.WriteLine(DateTimeOffset.Now.ToUnixTimeSeconds());
DateTime dateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
dateTime = dateTime.AddSeconds(1674655592.111);
Console.WriteLine(dateTime.Second);
Console.WriteLine(dateTime.Millisecond);