Epoch Converter and Date/Time in C#

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• DateTime
• Convert from Epoch to Human Readable Date
• Convert from Human Readable Date to Epoch

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DateTime

The DateTime class represents an instant in time, typically expressed as a date and time of day.

    using System;

    class MainClass {
      public static void Main (string[] args) {
        DateTime date1 = DateTime.Now;
        Console.WriteLine(date1);

        DateTime date2 = DateTime.Today;
        Console.WriteLine(date2);

        //new DateTime(year, month, day, hour, min, seconds)
        DateTime date3 = new DateTime(2008, 5, 1, 8, 30, 52);
        Console.WriteLine(date3);
        Console.WriteLine(date3.ToString("F")); //string format

      }
    }

                

Output:

    02/16/2019 04:12:50
    02/16/2019 00:00:00
    05/01/2008 08:30:52
    Thursday, 01 May 2008 08:30:52

                

Click here for more string formats.

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Convert from Epoch to Human Readable Date

    using System;

    class MainClass {
      public static void Main (string[] args) {
          double timestamp = 1550545864;
          DateTime start = new DateTime(1970, 1, 1, 0, 0, 0, 0); //from start epoch time
          start = start.AddSeconds(timestamp); //add the seconds to the start DateTime
          Console.WriteLine (start);
      }
    }

                

Output:

    2/19/2019 3:11:04 AM

                

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Convert from Human Readable Date to Epoch

    using System;

    class MainClass {
      public static void Main (string[] args) {
        //subtract the epoch start time from current time
        TimeSpan t = DateTime.Now - new DateTime(1970, 1, 1);
        int secondsSinceEpoch = (int)t.TotalSeconds;
        Console.WriteLine(secondsSinceEpoch);
      }
    }

                

Output:

    1550290604

                

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