error CS0176: Member 'DateTime.Now' cannot be accessed with an instance reference; qualify it with a

using System;
using System.Net;      //required
using System.Net.Sockets;    //required
namespace Server
{
    public class print
    {
        
        public void errlog(String txt)
        {
            System.DateTime today = System.DateTime.Today;
            Console.WriteLine("[{0}] ERR: {1}", today.Now.ToString("yyyy-MM-dd hh:mm:ss"), txt);
        }
        public void infolog(String txt)
        {
            System.DateTime today = System.DateTime.Today;
            Console.WriteLine("[{0}] INFO: {1}", today.Now.ToString("yyyy-MM-dd hh:mm:ss"), txt);
        }
    }

    class Server
    {
    private String hostip = "0.0.0.0";
    private int hostport = 8713;
        static void Main(string[] args){
            print.errlog("Hello! This is an error!");
            print.infolog("Hello! This is a debug log!");
        }
    }
}

using System;
using System.Net;      //required
using System.Net.Sockets;    //required
namespace Server
{
    public class print
    {
        
        public void errlog(String txt)
        {
            System.DateTime today = System.DateTime.Today;
            Console.WriteLine("[{0}] ERR: {1}", today.Now.ToString("yyyy-MM-dd hh:mm:ss"), txt);
        }
        public void infolog(String txt)
        {
            System.DateTime today = System.DateTime.Today;
            Console.WriteLine("[{0}] INFO: {1}", today.Now.ToString("yyyy-MM-dd hh:mm:ss"), txt);
        }
    }

    class Server
    {
    private String hostip = "0.0.0.0";
    private int hostport = 8713;
        static void Main(string[] args){
            print.errlog("Hello! This is an error!");
            print.infolog("Hello! This is a debug log!");
        }
    }
}