Le nom des jours apparait avec une majuscule au début

templates/mail/mail_timetable.txt

-{% autoescape off %}{% for day in courses %}{{ day.0.begin|date:"l j F o" }} - de {{ day.0.begin|date:"H:i" }} à {% with day|last as last %}{{ last.end|date:"H:i" }}{% endwith %}
+{% autoescape off %}{% for day in courses %}{% filter title %}{{ day.0.begin|date:"l j F o" }}{% endfilter %} - de {{ day.0.begin|date:"H:i" }} à {% with day|last as last %}{{ last.end|date:"H:i" }}{% endwith %}
 {% for course in day %}
  * {{ course.name }}, de {{ course.begin|date:"H:i" }} à {{ course.end|date:"H:i" }}{% if course.rooms.all|length > 0 %}
    Salle{% if course.rooms.all|length > 1 %}s{% endif %} {% for room in course.rooms.all %}{{ room }} {% endfor %}{% endif %}

templates/timetable.html

@@ -6,7 +6,7 @@
       <h2>{{ group.timetable.name }} &ndash; {{ group.name }} &ndash; Semaine {{ week }}</h2>
       <p>Dernière mise à jour le {{ last_update|date:"l j F o" }} à {{ last_update|date:"H:i" }}</p>{% for day in courses %}
       <section>
-        <h3>{{ day.0.begin|date:"l j F o" }} &ndash; de {{ day.0.begin|date:"H:i" }} à {% with day|last as last %}{{ last.end|date:"H:i" }}{% endwith %}</h3>
+        <h3>{% filter title %}{{ day.0.begin|date:"l j F o" }}{% endfilter %} &ndash; de {{ day.0.begin|date:"H:i" }} à {% with day|last as last %}{{ last.end|date:"H:i" }}{% endwith %}</h3>
         <ul>{% for course in day %}
           <li class="course"><b>{{ course.name }}</b>, de {{ course.begin|date:"H:i" }} à {{ course.end|date:"H:i" }}{% if course.rooms.all|length > 0 %}<br /><em>Salle{% if course.rooms.all|length > 1 %}s{% endif %} {% for room in course.rooms.all %}{{ room }} {% endfor %}</em>{% endif %}</li>{% endfor %}
         </ul>