diff --git a/golem_season/__init__.py b/golem_season/__init__.py
new file mode 100644
index 0000000..2fca3d2
--- /dev/null
+++ b/golem_season/__init__.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2016 Fabien Bourgeois <fabien@yaltik.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from . import models
diff --git a/golem_season/__openerp__.py b/golem_season/__openerp__.py
new file mode 100644
index 0000000..14c2f50
--- /dev/null
+++ b/golem_season/__openerp__.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2016 Fabien Bourgeois <fabien@yaltik.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+{
+    'name': 'GOLEM seasons',
+    'summary': 'GOLEM non-profit seasons management',
+    'description': '''
+    Non-profit french MJC seasons management with dates ranges
+    ''',
+    'version': '0.1',
+    'category': 'Non-profit management',
+    'author': 'Fabien Bourgeois',
+    'license': 'AGPL-3',
+    'application': False,
+    'installable': True,
+    'depends': ['membership'],
+    'data': ['views/golem_season_view.xml']
+}
diff --git a/golem_season/models/__init__.py b/golem_season/models/__init__.py
new file mode 100644
index 0000000..c7a55cc
--- /dev/null
+++ b/golem_season/models/__init__.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2016 Fabien Bourgeois <fabien@yaltik.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from . import golem_season
diff --git a/golem_season/models/golem_season.py b/golem_season/models/golem_season.py
new file mode 100644
index 0000000..a6cf4bd
--- /dev/null
+++ b/golem_season/models/golem_season.py
@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2016 Fabien Bourgeois <fabien@yaltik.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from openerp import models, fields, api, _
+
+
+class GolemSeason(models.Model):
+    """ GOLEM Season """
+    _name = 'golem.season'
+    _description = 'GOLEM Season'
+    _order = 'date_start desc'
+
+    name = fields.Char('Season name')
+    date_start = fields.Date('Period start')
+    date_end = fields.Date('Period end')
+
+    @api.constrains('date_start', 'date_end')
+    def _check_period(self):
+        """ Check if end date if after start date and if there is no conflict
+        with existing periods """
+        for season in self:
+            if season.date_start > season.date_end:
+                raise models.ValidationError(_('Start of the period cannot be '
+                                               'after end of the period.'))
+            else:
+                seasons = self.env['golem.season'].search([])
+                for s in seasons:
+                    print s.name
+                    if s.date_start < season.date_start < s.date_end:
+                        msg = _('Start of the period is in range of an '
+                                'existing period {}'.format(s.name))
+                        raise models.ValidationError(msg)
+                    if s.date_start < season.date_end < s.date_end:
+                        msg = _('End of the period is in range of an '
+                                'existing period {}'.format(s.name))
+                        raise models.ValidationError(msg)
+                    if season.date_start < s.date_start < season.date_end:
+                        msg = _('Period {} cannot be included into current '
+                                'period'.format(s.name))
+                        raise models.ValidationError(msg)
diff --git a/golem_season/views/golem_season_view.xml b/golem_season/views/golem_season_view.xml
new file mode 100644
index 0000000..14a9f65
--- /dev/null
+++ b/golem_season/views/golem_season_view.xml
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+Copyright 2016 Fabien Bourgeois <fabien@yaltik.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-->
+
+<openerp>
+  <data>
+
+    <!-- Forms -->
+    <record id="form" model="ir.ui.view">
+      <field name="name">GOLEM Season Form</field>
+      <field name="model">golem.season</field>
+      <field name="arch" type="xml">
+        <form>
+          <sheet>
+            <group string="Season">
+              <field name="name" />
+              <field name="date_start" />
+              <field name="date_end" />
+            </group>
+          </sheet>
+        </form>
+      </field>
+    </record>
+
+    <!-- Trees -->
+    <record id="tree" model="ir.ui.view">
+      <field name="name">GOLEM Seasons</field>
+      <field name="model">golem.season</field>
+      <field name="arch" type="xml">
+        <tree>
+          <field name="name" />
+          <field name="date_start" />
+          <field name="date_end" />
+        </tree>
+      </field>
+    </record>
+
+    <!-- Search -->
+    <record id="filter" model="ir.ui.view">
+      <field name="name">GOLEM Seasons Filters</field>
+      <field name="model">golem.season</field>
+      <field name="arch" type="xml">
+        <search>
+          <field name="name" />
+        </search>
+      </field>
+    </record>
+
+    <!-- Actions -->
+    <act_window id="action_list" name="GOLEM Seasons"
+      res_model="golem.season" view_mode="tree,form" />
+    <!-- Menus -->
+    <menuitem id="menu_seasons" name="GOLEM Seasons"
+      parent="base.menu_marketing_config_association" sequence="2"
+      action="action_list" />
+
+  </data>
+</openerp>