Add Event.start_date index

events/models.py

@@ -1,7 +1,7 @@
-from django.utils import timezone
 from django.db import models
 from django.db.models import Q
 from django.http import Http404, HttpRequest
+from django.utils import timezone
 from modelcluster.fields import ParentalKey  # type: ignore
 from timezone_field import TimeZoneField  # type: ignore
 from wagtail.admin.panels import FieldPanel, InlinePanel, PageChooserPanel
@@ -109,6 +109,9 @@ class EventCategoryChoices(models.TextChoices):
     class Meta:
         db_table = "events"
         ordering = ["start_date"]
+        indexes = [
+            models.Index(fields=["start_date"]),
+        ]
 
 
 class EventsIndexPage(Page):