How to add date and time in tkinter window?

from tkinter import *
import tkinter as tk
from tkinter import messagebox
import serial

class Win1(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        Label(self, text= "ISMC", font= ('Helvetica 20 bold')).pack(padx=300, pady=5)
        B1=Button(self, text="AUTO", command=lambda:controller.show_frame(Win2)).pack(pady=20, padx=200)
        B2=Button(self, text="MANUAL", command=lambda:controller.show_frame(Win4)).pack(pady=20, padx=200)

class Win2(tk.Frame):
    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)

class Application(tk.Tk):
     def __init__(self, *args, **kwargs):
         tk.Tk.__init__(self, *args, **kwargs)
         window = tk.Frame(self)
         window.pack(side = "top", fill = "both", expand = True)
         self.frames = {}
         for F in (Win1, Win2):
             frame = F(window, self)
             self.frames[F] = frame
             frame.grid(row = 0, column=0, sticky="nsew")
         self.show_frame(Win1)
    
    def show_frame(self, window):
        frame = self.frames[window]
        frame.tkraise()
        self.title("Relay Test") 
        self.geometry('1500x1500')
    
app = Application()
app.mainloop()