Python program to find birthdate on the same day you were born

import datetime
import calendar

weekdays = ["Monday", "Tuesday", "Wednesday", 
           "Thursday", "Friday", "Saturday", "Sunday"]
   

# get_birth day
def split_date(birthday):

    # Split it to year, month and day
    year, month, day = birthday.split('-')    
    return year, month, day
    

def get_birthday(birthday):

    year, month, day = split_date(birthday)

    # Get a date object for the day of birth
    bdate = datetime.datetime(int(year), int(month), int(day))

    # Get the integer weekday for the day of birth
    weekday = bdate.weekday()

    # Tell the user
    day = weekdays[weekday]

    return day   


def listToString(x):

    # initialize an empty string 
    String = " " 

    # return string   
    return (String.join(x))


def true_birthdays(birthdate):
    year, month, day = split_date(birthdate)

    # get the year from birthday
    year = birthdate[:4].split('-')

    # convert list to string   
    year = listToString(year)

    # get the weekday you are born
    d_day = get_birthday(birthdate) 

    # list of true birthdate[birthday that have same 
    # weekday as the day you were born]    
    true_BD = [] 
    
    j = 0

    for i in range(int(year), 2050):

        # add + j to birth year 
        new_year = int(year)+j 

        # construct new birthday
        new_birthday = str(str(new_year)+"-"+month+"-"+day) 

        # get weekday of the new birthday
        new_d_day = get_birthday(new_birthday)

        # if birthday that have same weekday 
        # as the day you were born
        if d_day == new_d_day: 

        # add to the list of true birthdate
            true_BD.append(new_birthday)
        else:
            pass
        j += 1

    return true_BD


def main():

    # Get the birth date
    birthdate = "1996-11-12"

    # year_limit = input("search limit from your birthday- ")
    dates = true_birthdays(birthdate)  
    
    print(dates)
    

# Driver's code
main()