Index: src/django_gheat/gheat/management/commands/clear_tile_cache.py
===================================================================
--- src/django_gheat/gheat/management/commands/clear_tile_cache.py	(revision 9187)
+++ src/django_gheat/gheat/management/commands/clear_tile_cache.py	(revision 9187)
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Clean/Clear the cached tiles
+#
+# Rick van der Zwet <info@rickvanderzwet.nl>
+#
+from django.core.management.base import BaseCommand, CommandError
+from optparse import OptionParser, make_option
+from gheat.models import TileCache
+import datetime
+import sys
+
+class Command(BaseCommand):
+  option_list = BaseCommand.option_list + (
+    make_option('-d', '--datum', dest='datum', default=None, help="""Provide date
+      in following format: %Y-%m-%d[-%H%M], to delete all time generated before
+      this time the filename"""),)
+
+  def handle(self, *args, **options):
+    if options['datum'] == None:
+       datum = datetime.datetime.now()
+    else:
+      # Try parsing different formats
+      for fmt in ['%Y-%m-%d-%H%M', '%Y-%m-%d']:
+        try:
+          datum = datetime.datetime.strptime(options['datum'],fmt)
+          break
+        except ValueError:
+          datum = None
+      if not datum:
+        raise CommandError("Invalid date '%s'\n" % options['datum'])
+
+    obj = TileCache.objects.filter(creation_time__range=(datetime.datetime.fromtimestamp(0), datum))
+    print "#INFO: Deleting '%s' objects" % obj.count()
+    obj.delete()
+