By using following code dates are not what I have entered they are todays date and this problem is not getting corrected

By using following code dates are not what I have entered they are todays date and this problem is not getting corrected. I mean what to add or edit in the code below to make them the dates I have entered in the tkinter form which can be any not only todays date. The tkinter form then input these dates in an excel sheet.

p_issue = Label(top, text='ISSUE DATE', font=('bold', 10))
p_issue.place(relx=0.1, rely=0.61, anchor=W) 
global e_pissue 
e_pissue = Entry(top) 
e_pissue.place(relx=0.5, rely=0.61, anchor=E) 
cal1 = DateEntry(e_pissue, width=12, borderwidth=1) 
cal1.pack() 
e_pissue.config(width=30) 
e_pissue.insert(END, cal1.get())