Clock with Date & time in different formats in Tkinter window

Tkinter GUI displaying real time clock with Weekday and date in different formats

import tkinter as tk  
from tkinter import ttk  

my_w = tk.Tk()  
my_w.geometry("405x170")    

from time import strftime  

def my_time():  
    time_string = strftime('%H:%M:%S %p')  # time format  
    l1.config(text=time_string)  
    l1.after(1000, my_time)  # time delay of 1000 milliseconds  

my_font = ('times', 52, 'bold')  # display size and style  

l1 = tk.Label(my_w, font=my_font, bg='yellow')  
l1.grid(row=1, column=1, padx=5, pady=25)  

my_time()  

my_w.mainloop()

We are calling the same function my_time() at an interval of 1 sec ( 1000 milliseconds ) by using l1.after(1000,my_time)

Managing Clock display format

Add date and Month name in next line. Here we changed the background colour of the Label to bg='#53fcf7'

time_string = strftime('%H:%M:%S %p \n %d %B')

Displaying Clock with date in Tkinter window

Display Local date ( %x ) along with clock.

time_string = strftime('%H:%M:%S %p \n %x')

Displaying Clock with local date in Tkinter window

With Full weekday

time_string = strftime('%H:%M:%S %p \n %A \n %x')

Displaying Clock with local day in Tkinter window

Here is a list of formats can be used with strftime()

Adding time to Entry box on Button click

Adding time to Entry Widget on button click

import tkinter  as tk 
from tkinter import ttk
my_w = tk.Tk()
my_w.geometry("300x140")  
from time import strftime
def my_time(): # On button click 
    time_string = strftime('%H:%M:%S %p')
    e1_str.set(time_string)  # adding time to Entry

l1 = tk.Label(my_w,  text='Add Time', width=10 ) 
l1.grid(row=1,column=1,padx=10,pady=30) 
e1_str=tk.StringVar()
e1 = tk.Entry(my_w, textvariable=e1_str,width=15) #  Entry box
e1.grid(row=1,column=2) 

b1 = tk.Button(my_w, text='Update', width=8,bg='yellow',
     command=lambda: my_time())
b1.grid(row=1,column=3)

my_w.mainloop()

One more set of input and buttons can be added to record the start time and end time of any process.

List of formats used for generating date and time

Format	Meaning
%a	Locale’s abbreviated weekday name.
%A	Locale’s full weekday name.
%b	Locale’s abbreviated month name.
%B	Locale’s full month name.
%c	Locale’s appropriate date and time representation.
%d	Day of the month as a decimal number [01,31].
%H	Hour (24-hour clock) as a decimal number [00,23].
%I	Hour (12-hour clock) as a decimal number [01,12].
%j	Day of the year as a decimal number [001,366].
%m	Month as a decimal number[01,12].
%M	Minute as a decimal number[00,59].
%p	Locale’s equivalent of either AM or PM.
%S	Second as a decimal number[00,61].
%U	Week number of the year(Sunday as the first day of the week) as a decimal number[00,53]. All days in a new year preceding the first Sunday are considered to be in week 0.
%w	Weekday as a decimal number [0(Sunday),6].
%W	Week number of the year (Monday as the first day of the week) as a decimal number[00,53]. All days in a new year preceding the first Monday are considered to be in week 0.
%x	Locale’s appropriate date representation.
%X	Locale’s appropriate time representation.
%y	Year without century as a decimal number [00,99].
%Y	Year with century as a decimal number.
%Z	Time zone name (no characters if no time zone exists).
%%	A literal '%' character.

Projects in Tkinter Displaying Calendar to pick date

Python Tkinter Sample codes Python- Tutorials

Subhendu Mohapatra

Author

🎥 Join me live on YouTube

Passionate about coding and teaching, I publish practical tutorials on PHP, Python, JavaScript, SQL, and web development. My goal is to make learning simple, engaging, and project‑oriented with real examples and source code.

Subscribe to our YouTube Channel here

	20-02-2023
Thanks a lot

	19-12-2023
thanks bro very helpfull

Date & Time in tkinter Window

Managing Clock display format

Adding time to Entry box on Button click

List of formats used for generating date and time

Subhendu Mohapatra