from datetime import datetime


def check_birthday(birthday):
    """
    Function to check if today is someone's birthday.
    """
    birthday = birthday.split("/")[0:2]
    today = datetime.strftime(datetime.now(), "%d/%m").split("/")

    if int(birthday[0]) == int(today[0]) and int(birthday[1]) == int(today[1]):
        return True
    return False