weeks

app/listmonk/views.py

@@ -34,7 +34,7 @@ def week(year, month, day):
         week=ExtractWeek('published')
     )
     date = datetime.strptime('%s-%s-%s' % (year, month, day), '%Y-%m-%d')
-    week = int(date.strftime('%U'))
+    week = date.isocalendar()[1]
     year = int(year)
     archive_week = archive.filter(year=year, week=week).order_by('published')
     context['weeks'] = get_weeks(archive)