diff --git a/auction/models.py b/auction/models.py
index 42d773c..ee8af6d 100644
--- a/auction/models.py
+++ b/auction/models.py
@@ -1,12 +1,13 @@
 from django.contrib.gis.db import models
 from django.utils import timezone
-from django.conf import settings
 from django.contrib.gis.db.models.functions import Distance
 
 from clients.models import ClientProfile
 from partners.models import Establishment, RoomCategory
 
-from dateutil.relativedelta import relativedelta
+from dbsettings.functions import getValue
+
+from datetime import timedelta
 
 import uuid
 
@@ -28,6 +29,7 @@ class Inquiry(models.Model):
     children = models.IntegerField()
     comment = models.TextField(null=True, blank=True)
     activated = models.DateTimeField(null=True, blank=True)
+    bidding_end = models.DateTimeField(null=True, blank=True)
     gateway = models.CharField(max_length=128, null=True, blank=True)
 
     @property
@@ -37,15 +39,18 @@ class Inquiry(models.Model):
 
         return self.invoice.is_paid
 
+    def activate(self):
+        if self.activated:
+            return False
+
+        self.activated = timezone.now()
+        self.bidding_end = self.activated + timedelta(hours=getValue("auction.bidding_period", 24))
+        self.auction_end = self.bidding_end + timedelta(hours=getValue("auction.selection_period", 24))
+        self.save()
+
     def process_payment(self):
         if self.invoice.is_paid:
-            self.activated = timezone.now()
-            self.save()
-
-    @property
-    def expiry(self):
-        if self.activated:
-            return self.activated + relativedelta(days=settings.INQUIRY_RUNTIME)
+            self.activate()
 
     @property
     def expired(self):
diff --git a/localsettings.dist.py b/localsettings.dist.py
index c12118d..9ea126d 100644
--- a/localsettings.dist.py
+++ b/localsettings.dist.py
@@ -58,7 +58,3 @@ JOKER_COUNTRIES = ["AT"]
 CURRENCY_SYMBOL = "€"
 CURRENCY_CODE = "EUR"
 CURRENCY_NAME = "Euro"
-
-# Run time of inquiries in days
-
-INQUIRY_RUNTIME = 7
\ No newline at end of file