diff --git a/app/models/application_model.rb b/app/models/application_model.rb
index 6a80efbe8..2d50b4eb4 100644
--- a/app/models/application_model.rb
+++ b/app/models/application_model.rb
@@ -278,6 +278,31 @@ returns
 
 =begin
 
+generate uniq name (will check name of model and generates _1 sequenze)
+
+Used as before_update callback, no own use needed
+
+  name = Model.genrate_uniq_name('some name')
+
+returns
+
+  result = 'some name_X'
+
+=end
+
+  def self.genrate_uniq_name(name)
+    return name if !find_by(name: name)
+    (1..100).each {|counter|
+      name = "#{name}_#{counter}"
+      exists = find_by(name: name)
+      next if exists
+      break
+    }
+    name
+  end
+
+=begin
+
 lookup model from cache (if exists) or retrieve it from db, id, name or login possible
 
   result = Model.lookup( :id => 123 )
diff --git a/app/models/calendar.rb b/app/models/calendar.rb
index 925c14a33..4394ed86a 100644
--- a/app/models/calendar.rb
+++ b/app/models/calendar.rb
@@ -10,6 +10,36 @@ class Calendar < ApplicationModel
 
 =begin
 
+set inital default calendar
+
+  calendar = Calendar.init_setup
+
+returns calendar object
+
+=end
+
+  def self.init_setup(ip = nil)
+
+    # call for calendar suggestion
+    calendar_details = Service::GeoCalendar.location(ip)
+    return if !calendar_details
+
+    calendar_details['name'] = Calendar.genrate_uniq_name(calendar_details['name'])
+    calendar_details['default'] = true
+    calendar_details['created_by_id'] = 1
+    calendar_details['updated_by_id'] = 1
+
+    # find if auto generated calendar exists
+    calendar = Calendar.find_by(default: true, updated_by_id: 1, created_by_id: 1)
+    if calendar
+      calendar.update_attributes(calendar_details)
+      return calendar
+    end
+    create(calendar_details)
+  end
+
+=begin
+
 get default calendar
 
   calendar = Calendar.default
diff --git a/db/migrate/20150975000001_update_settings5.rb b/db/migrate/20150975000001_update_settings5.rb
new file mode 100644
index 000000000..224c17dde
--- /dev/null
+++ b/db/migrate/20150975000001_update_settings5.rb
@@ -0,0 +1,28 @@
+class UpdateSettings5 < ActiveRecord::Migration
+  def up
+    Setting.create_or_update(
+      title: 'Geo Calendar Service',
+      name: 'geo_calendar_backend',
+      area: 'System::Services',
+      description: 'Defines the backend for geo calendar lookups. Used for inital calendar succession.',
+      options: {
+        form: [
+          {
+            display: '',
+            null: true,
+            name: 'geo_calendar_backend',
+            tag: 'select',
+            options: {
+              '' => '-',
+              'Service::GeoCalendar::Zammad' => 'Zammad GeoCalendar Service',
+            },
+          },
+        ],
+      },
+      state: 'Service::GeoCalendar::Zammad',
+      preferences: { prio: 2 },
+      frontend: false
+    )
+    Calendar.init_setup
+  end
+end
diff --git a/db/seeds.rb b/db/seeds.rb
index 12f4474f1..ad069ec92 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -276,6 +276,30 @@ Setting.create_if_not_exists(
   frontend: false
 )
 
+Setting.create_if_not_exists(
+  title: 'Geo Calendar Service',
+  name: 'geo_calendar_backend',
+  area: 'System::Services',
+  description: 'Defines the backend for geo calendar lookups. Used for inital calendar succession.',
+  options: {
+    form: [
+      {
+        display: '',
+        null: true,
+        name: 'geo_calendar_backend',
+        tag: 'select',
+        options: {
+          '' => '-',
+          'Service::GeoCalendar::Zammad' => 'Zammad GeoCalendar Service',
+        },
+      },
+    ],
+  },
+  state: 'Service::GeoCalendar::Zammad',
+  preferences: { prio: 2 },
+  frontend: false
+)
+
 Setting.create_if_not_exists(
   title: 'Send client stats',
   name: 'ui_send_client_stats',
@@ -1920,6 +1944,7 @@ Locale.create_if_not_exists(
 )
 Locale.load
 Translation.load
+Calendar.init_setup
 
 # install all packages in auto_install
-Package.auto_install()
+Package.auto_install
diff --git a/test/integration/geo_calendar_test.rb b/test/integration/geo_calendar_test.rb
new file mode 100644
index 000000000..d24881563
--- /dev/null
+++ b/test/integration/geo_calendar_test.rb
@@ -0,0 +1,65 @@
+# encoding: utf-8
+require 'integration_test_helper'
+
+class GeoIpCalendar < ActiveSupport::TestCase
+
+  # check
+  test 'check some results' do
+
+    result = Service::GeoCalendar.location( '127.0.0.0.1' )
+    assert(result)
+    assert_equal('My Calendar', result['name'])
+    assert_equal('America/Los_Angeles', result['timezone'])
+
+    result = Service::GeoCalendar.location( '127.0.0.1' )
+    assert(result)
+    assert_equal('My Calendar', result['name'])
+    assert_equal('America/Los_Angeles', result['timezone'])
+
+    result = Service::GeoCalendar.location( '195.65.29.254' )
+    assert(result)
+    assert_equal('Switzerland', result['name'])
+    assert_equal('Europe/Zurich', result['timezone'])
+
+    result = Service::GeoCalendar.location( '195.191.132.18' )
+    assert(result)
+    assert_equal('Switzerland', result['name'])
+    assert_equal('Europe/Zurich', result['timezone'])
+
+    result = Service::GeoCalendar.location( '134.109.140.74' )
+    assert(result)
+    assert_equal('Germany', result['name'])
+    assert_equal('Europe/Berlin', result['timezone'])
+
+    result = Service::GeoCalendar.location( '46.253.55.170' )
+    assert(result)
+    assert_equal('Germany', result['name'])
+    assert_equal('Europe/Berlin', result['timezone'])
+
+    result = Service::GeoCalendar.location( '169.229.216.200' )
+    assert(result)
+    assert_equal('United States/California', result['name'])
+    assert_equal('America/Los_Angeles', result['timezone'])
+
+    result = Service::GeoCalendar.location( '17.171.2.25' )
+    assert(result)
+    assert_equal('United States/California', result['name'])
+    assert_equal('America/Los_Angeles', result['timezone'])
+
+    result = Service::GeoCalendar.location( '184.168.47.225' )
+    assert(result)
+    assert_equal('United States/Arizona', result['name'])
+    assert_equal('America/Phoenix', result['timezone'])
+
+    result = Service::GeoCalendar.location( '69.172.201.245' )
+    assert(result)
+    assert_equal('United States/New York', result['name'])
+    assert_equal('America/New_York', result['timezone'])
+
+    result = Service::GeoCalendar.location( '132.247.70.37' )
+    assert(result)
+    assert_equal('Mexico/Sonora', result['name'])
+    assert_equal('America/Hermosillo', result['timezone'])
+
+  end
+end
diff --git a/test/integration/geo_ip_test.rb b/test/integration/geo_ip_test.rb
index f9ad9d416..b38b73fa4 100644
--- a/test/integration/geo_ip_test.rb
+++ b/test/integration/geo_ip_test.rb
@@ -15,6 +15,15 @@ class GeoIpTest < ActiveSupport::TestCase
     assert_equal(nil, result['latitude'])
     assert_equal(nil, result['longitude'])
 
+    result = Service::GeoIp.location( '127.0.0.1' )
+    assert(result)
+    assert_equal(nil, result['country_name'])
+    assert_equal(nil, result['city_name'])
+    assert_equal(nil, result['country_code'])
+    assert_equal(nil, result['continent_code'])
+    assert_equal(nil, result['latitude'])
+    assert_equal(nil, result['longitude'])
+
     result = Service::GeoIp.location( '195.65.29.254' )
     assert(result)
     assert_equal('Switzerland', result['country_name'])
@@ -51,5 +60,14 @@ class GeoIpTest < ActiveSupport::TestCase
     assert_equal(37.8668, result['latitude'])
     assert_equal(-122.2536, result['longitude'])
 
+    result = Service::GeoIp.location( '17.171.2.25' )
+    assert(result)
+    assert_equal('United States', result['country_name'])
+    assert_equal('Cupertino', result['city_name'])
+    assert_equal('US', result['country_code'])
+    assert_equal('NA', result['continent_code'])
+    assert_equal(37.323, result['latitude'])
+    assert_equal(-122.0322, result['longitude'])
+
   end
 end