diff --git a/ddcz/migrations/0003_plurals_20241229_1738.py b/ddcz/migrations/0003_plurals_20241229_1738.py
index 2ca2317..3de5534 100644
--- a/ddcz/migrations/0003_plurals_20241229_1738.py
+++ b/ddcz/migrations/0003_plurals_20241229_1738.py
@@ -4,26 +4,37 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
-        ('ddcz', '0002_auto_20240818_1740'),
+        ("ddcz", "0002_auto_20240818_1740"),
     ]
 
     operations = [
         migrations.AlterModelOptions(
-            name='rangerspell',
-            options={'verbose_name': 'Hraníčářské kouzlo', 'verbose_name_plural': 'Hraníčářská kouzla'},
+            name="rangerspell",
+            options={
+                "verbose_name": "Hraníčářské kouzlo",
+                "verbose_name_plural": "Hraníčářská kouzla",
+            },
         ),
         migrations.AlterModelOptions(
-            name='scheduledemail',
-            options={'verbose_name': 'Plánovaný e-mail', 'verbose_name_plural': 'Plánované e-maily'},
+            name="scheduledemail",
+            options={
+                "verbose_name": "Plánovaný e-mail",
+                "verbose_name_plural": "Plánované e-maily",
+            },
         ),
         migrations.AlterModelOptions(
-            name='schedulednotification',
-            options={'verbose_name': 'Plánovaná notifikace', 'verbose_name_plural': 'Plánované notifikace'},
+            name="schedulednotification",
+            options={
+                "verbose_name": "Plánovaná notifikace",
+                "verbose_name_plural": "Plánované notifikace",
+            },
         ),
         migrations.AlterModelOptions(
-            name='userprofile',
-            options={'verbose_name': 'Uživatelský profil', 'verbose_name_plural': 'Uživatelské profily'},
+            name="userprofile",
+            options={
+                "verbose_name": "Uživatelský profil",
+                "verbose_name_plural": "Uživatelské profily",
+            },
         ),
     ]
diff --git a/ddcz/migrations/0004_market_created.py b/ddcz/migrations/0004_market_created.py
index 3f998d2..9326084 100644
--- a/ddcz/migrations/0004_market_created.py
+++ b/ddcz/migrations/0004_market_created.py
@@ -4,15 +4,14 @@
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
-        ('ddcz', '0003_plurals_20241229_1738'),
+        ("ddcz", "0003_plurals_20241229_1738"),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='market',
-            name='created',
-            field=models.DateTimeField(blank=True, null=True, verbose_name='Přidáno'),
+            model_name="market",
+            name="created",
+            field=models.DateTimeField(blank=True, null=True, verbose_name="Přidáno"),
         ),
     ]
diff --git a/ddcz/migrations/0005_market_dates_20241229_1747.py b/ddcz/migrations/0005_market_dates_20241229_1747.py
new file mode 100644
index 0000000..fde9047
--- /dev/null
+++ b/ddcz/migrations/0005_market_dates_20241229_1747.py
@@ -0,0 +1,58 @@
+# Generated by Django 3.1.14 on 2024-12-29 16:47
+
+from django.db import migrations
+from datetime import datetime
+
+import sentry_sdk
+
+
+def migrate_dates(apps, schema_editor):
+    Market = apps.get_model("ddcz", "Market")
+
+    for market in Market.objects.all():
+        if not market.published_varchar:
+            sentry_sdk.capture_message(
+                f"Market entry without date",
+                level="error",
+                extras={
+                    "market_id": market.id,
+                    "invalid_date": market.published_varchar,
+                },
+            )
+
+        try:
+            parsed_date = datetime.strptime(market.published_varchar, "%-d. %-m. %Y")
+        except ValueError:
+            # If both formats fail, report to Sentry
+            sentry_sdk.capture_message(
+                f"Failed to parse date in Market record",
+                level="error",
+                extras={
+                    "market_id": market.id,
+                    "invalid_date": market.published_varchar,
+                },
+            )
+            continue
+
+        market.created = parsed_date
+        market.save()
+
+
+def reverse_migrate_dates(apps, schema_editor):
+    Market = apps.get_model("ddcz", "Market")
+
+    for market in Market.objects.all():
+        if not market.created:
+            continue
+
+        # Convert back to the original format with leading zeros
+        market.published_varchar = market.created.strftime("%d. %m. %Y")
+        market.save()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("ddcz", "0004_market_created"),
+    ]
+
+    operations = [migrations.RunPython(migrate_dates, reverse_migrate_dates)]