Implementing a countdown timer based on Python

import time
import tkinter as tk
from tkinter import messagebox

def main():
    window1 = ()
    ('Timer [v0.0]')
    ('300x200')

    l1 = (window1, text = 'Current time:', font = ('Song Style', 15))
    (x = 5, y = 10)
   
    def time_now():
        global seconds_now
        seconds_now = ()
        lt = (seconds_now)
        time1 = []
        time2 = '%04d year %02d month %02d day \n %02d hour %02d minute %02d second' % (lt[0], lt[1], lt[2], lt[3], lt[4], lt[5])

        if time2 != time1:
            time1 = time2
            l1_2 = (window1, text = time1, font = ('Song Style', 20))
            l1_2.configure(text = time2)
            l1_2.place(x = 30, y = 50)
            l1_2.after(200, time_now)
            
    time_now()
    
    def input_time():
        window2 = ()
        ('Timer [v0.0]')
        ('300x120')

        l2_1 = (window2, text = 'Year', font = ('Song Style', 15))
        l2_1.place(x = 90, y = 20)
        l2_2 = (window2, text = 'Moon', font = ('Song Style', 15))
        l2_2.place(x = 170, y = 20)
        l2_3 = (window2, text = 'Day', font = ('Song Style', 15))
        l2_3.place(x = 250, y = 20)
        l2_4 = (window2, text = 'Effective date [1970/1/2-3001/1/1]', font = ('Song Style', 10))
        l2_4.place(x = 50, y = 50)

        year = (window2, text = None, font = ('Song Style', 15), width = 5)
        month = (window2, text = None, font = ('Song Style', 15), width = 5)
        day = (window2, text = None, font = ('Song Style', 15), width = 5)
        (x = 40, y = 20)
        (x = 120, y = 20)
        (x = 200, y = 20)

        def get_time():
            try:
                y = int(())
                m = int(())
                d = int(())
                lt_ = (f'{y} {m} {d}', '%Y %m %d')
                seconds_get = (lt_)
            except BaseException:
                (message='Input error!')
            else:
                ()    
            
            string1 = 'The query date is up to now:'
            string2 = 'The query date is past:'

            seconds_lasting = seconds_get - seconds_now
            
            day_lasting = abs(seconds_lasting) // 86400
            month_lasting = 0
            year_lasting = 0
            days = day_lasting
           
            if day_lasting > 356:
                year_lasting = day_lasting // 365
                day_lasting -= year_lasting * 365
                if day_lasting > 30:
                    month_lasting = day_lasting // 30
                    day_lasting -= month_lasting * 30
            elif day_lasting > 30:
                year_lasting = 0
                month_lasting = day_lasting // 30
                day_lasting -= month_lasting * 30 
            else:
                year_lasting, month_lasting = 0, 0
            
            if seconds_lasting > 0:
                prompt = string1
                days += 1
                day_lasting += 1
            else: 
                prompt = string2  
                  
            (message='%s%d day\n probably %d year%d month%d day' % (prompt, days, year_lasting, month_lasting, day_lasting))   
                
        button2 = (window2, text = 'Start query', font = ('Song Style', 15), command = get_time)
        (x = 110, y = 75)
       
        ()

    button1 = (window1, text = 'Enter date of inquiry', font = ('Song Style', 15), command = input_time)
    (x = 85, y = 125)

    ()

if __name__ == '__main__':
    main()