using System;

namespace ConsoleApp13
{
    class Program
    {
        static void Main(string[] args)
        {
            // 1596865604
            Console.WriteLine(GetUnixTime(DateTime.Now));

            Console.Read();
        }

        /// <summary>
        /// 獲取Unix時間戳, 秒級
        /// </summary>
        /// <param name="dateTime">時間</param>
        /// <returns></returns>
        public static long GetUnixTime(DateTime dateTime)
        {
            DateTime start = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1, 0, 0, 0, 0));
            return (long)(dateTime - start).TotalSeconds;
        }
    }
}