how to automatically fill in a date and time input in real time

Question

                                        <div class="col-md-4">
                                            <div class="form-group">
                                                <label>Data de Entrada</label>
                                                <input type="date" class="form-control" required      >
                                            </div>
                                        </div>

                                        <div class="col-md-4">
                                            <div class="form-group">
                                                <label>Data de Saida</label>
                                                <input type="date" class="form-control" required >
                                            </div>
                                        </div>
                                    </div>

I would like the input date entered to be filled in with the date and time that someone registered