using System;

public class Program

{

    public static void Main()

    {

        var secretKey = "8cc7b1eb-49cf-47e5-a0b1-be0d890a0f41";

        secretKey += DateTime.UtcNow.Date;

        var finalKey = Base64EncodeData(secretKey);

        Console.WriteLine(finalKey);

    }

    public static string Base64EncodeData(string plainText)

    {

        var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);

        return System.Convert.ToBase64String(plainTextBytes);

    }

}