{% for week in weeks %}
                        <tr>
                            {% for day in week %}
                                {% with day=day|default:'' %}
                                    <td class="calendar-day {% if year == now.year and month == now.month and day == now.day %}now{% endif %}">
                                        {{ day }}
                                    </td>
                                {% endwith %}
                            {% endfor %}
                        </tr>
                    {% endfor %}