Date & Time in tkinter Window

Basics of Python Tkinter More Projects in Tkinter
Displaying Clock 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

FormatMeaning
%aLocale’s abbreviated weekday name.
%ALocale’s full weekday name.
%bLocale’s abbreviated month name.
%BLocale’s full month name.
%cLocale’s appropriate date and time representation.
%dDay of the month as a decimal number [01,31].
%HHour (24-hour clock) as a decimal number [00,23].
%IHour (12-hour clock) as a decimal number [01,12].
%jDay of the year as a decimal number [001,366].
%mMonth as a decimal number[01,12].
%MMinute as a decimal number[00,59].
%pLocale’s equivalent of either AM or PM.
%SSecond as a decimal number[00,61].
%UWeek 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.
%wWeekday as a decimal number [0(Sunday),6].
%WWeek 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.
%XLocale’s appropriate time representation.
%yYear without century as a decimal number [00,99].
%YYear with century as a decimal number.
%ZTime zone name (no characters if no time zone exists).
%%A literal '%' character.
Projects in Tkinter Displaying Calendar to pick date

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