def retrieve_events_on_date(Day, Month, Year):
    conn = None
    try:
        conn = sqlite3.connect(calendar_db)
        c = conn.cursor()
        c.execute('SELECT * FROM calendar WHERE day = :day AND month = :month AND year = :year ', (Day, Month, Year))
        events_list = list(c.fetchall())
        conn.close()
        print('events: ', events_list)
        return events_list
    except sqlite3.OperationalError as e:
        print(e)
def retrieve_events_on_date(Day, Month, Year):
    conn = None
    try:
        conn = sqlite3.connect(calendar_db)
        c = conn.cursor()
        c.execute('SELECT * FROM calendar WHERE day = :day AND month = :month AND year = :year ', (Day, Month, Year))
        events_list = list(c.fetchall())
        conn.close()
        print('events: ', events_list)
        return events_list
    except sqlite3.OperationalError as e:
        print(e)