{% for obj in objects %}
    <tr>
        <td>{{ obj.name|safe }}</td>
        <td>{{ obj.begin|date:"Y-m-d H:i" }}</td>
        <td>{{ obj.end|date:"Y-m-d H:i" }}</td>
        <td>{{ obj.speaker }}</td>
        <td>{{ obj.timetable_organiser }}</td>
        <td>
            <button class="btn btn-danger" value="{{ obj.id }}">
                 Удалить
            </button>
        </td>
    </tr>
{% endfor %}