diff --git a/partner_tz/__init__.py b/partner_tz/__init__.py
new file mode 100644
index 000000000..738a2eec0
--- /dev/null
+++ b/partner_tz/__init__.py
@@ -0,0 +1,2 @@
+from . import models
+from . import tools
diff --git a/partner_tz/__manifest__.py b/partner_tz/__manifest__.py
new file mode 100644
index 000000000..85d27d16d
--- /dev/null
+++ b/partner_tz/__manifest__.py
@@ -0,0 +1,16 @@
+# Copyright 2020 Camptocamp SA
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
+{
+    "name": "Partner timezone",
+    "summary": "Remove partner timezone default value and display on form",
+    "version": "13.0.1.0.0",
+    "development_status": "Alpha",
+    "category": "Uncategorized",
+    "website": "https://github.com/OCA/partner-contact",
+    "author": "Camptocamp, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "application": False,
+    "installable": True,
+    "depends": ["base"],
+    "data": ["views/res_partner.xml"],
+}
diff --git a/partner_tz/models/__init__.py b/partner_tz/models/__init__.py
new file mode 100644
index 000000000..91fed54d4
--- /dev/null
+++ b/partner_tz/models/__init__.py
@@ -0,0 +1 @@
+from . import res_partner
diff --git a/partner_tz/models/res_partner.py b/partner_tz/models/res_partner.py
new file mode 100644
index 000000000..ab4526abb
--- /dev/null
+++ b/partner_tz/models/res_partner.py
@@ -0,0 +1,10 @@
+# Copyright 2020 Camptocamp SA
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
+from odoo import fields, models
+
+
+class ResPartner(models.Model):
+
+    _inherit = 'res.partner'
+
+    tz = fields.Selection(default=None)
diff --git a/partner_tz/readme/CONTRIBUTORS.rst b/partner_tz/readme/CONTRIBUTORS.rst
new file mode 100644
index 000000000..e31e2f0c4
--- /dev/null
+++ b/partner_tz/readme/CONTRIBUTORS.rst
@@ -0,0 +1 @@
+* Akim Juillerat <akim.juillerat@camptocamp.com>
diff --git a/partner_tz/readme/DESCRIPTION.rst b/partner_tz/readme/DESCRIPTION.rst
new file mode 100644
index 000000000..ca7456a53
--- /dev/null
+++ b/partner_tz/readme/DESCRIPTION.rst
@@ -0,0 +1,3 @@
+This module removes timezone default value on res.partner and display the field
+on form view.
+Moreover it provides a few tools function in `tools/tz_utils.py`.
diff --git a/partner_tz/tools/__init__.py b/partner_tz/tools/__init__.py
new file mode 100644
index 000000000..ed3bafe21
--- /dev/null
+++ b/partner_tz/tools/__init__.py
@@ -0,0 +1 @@
+from .tz_utils import *
diff --git a/partner_tz/tools/tz_utils.py b/partner_tz/tools/tz_utils.py
new file mode 100644
index 000000000..4d4076552
--- /dev/null
+++ b/partner_tz/tools/tz_utils.py
@@ -0,0 +1,58 @@
+# Copyright 2020 Camptocamp SA
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
+import pytz
+from datetime import datetime, date
+
+
+UTC_TZ = pytz.timezone('UTC')
+
+
+def tz_to_tz_naive_datetime(from_tz, to_tz, date_time):
+    """
+    Convert tz-naive datetime from a specifc tz to a tz-naive datetime of a specific tz
+
+    :param from_tz: pytz.timezone object or tz selection value
+    :param to_tz: pytz.timezone object or tz selection value
+    :param date_time: tz-naive datetime.datetime object
+    :return: tz-naive datetime.datetime object
+    """
+    if isinstance(from_tz, str):
+        from_tz = pytz.timezone(from_tz)
+    if isinstance(to_tz, str):
+        to_tz = pytz.timezone(to_tz)
+    return from_tz.localize(date_time).astimezone(to_tz).replace(tzinfo=None)
+
+
+def tz_to_utc_naive_datetime(from_tz, date_time):
+    return tz_to_tz_naive_datetime(from_tz, UTC_TZ, date_time)
+
+
+def utc_to_tz_naive_datetime(to_tz, date_time):
+    return tz_to_tz_naive_datetime(UTC_TZ, to_tz, date_time)
+
+
+def tz_to_tz_time(from_tz, to_tz, time, base_date=None):
+    """
+    Convert datetime.time from a specific tz to a datetime.time of a specific tz
+
+    :param from_tz: pytz.timezone object or tz selection value
+    :param to_tz: pytz.timezone object or tz selection value
+    :param time: datetime.time object
+    :param base_date: OPTIONAL datetime.date or datetime.datetime object to use
+           for the conversion
+    :return: datetime.time object
+    """
+    # Combine time with a date
+    if base_date is None:
+        base_date = date.today()
+    date_time = datetime.combine(base_date, time)
+    new_date_time = tz_to_tz_naive_datetime(from_tz, to_tz, date_time)
+    return new_date_time.time()
+
+
+def tz_to_utc_time(from_tz, time, base_date=None):
+    return tz_to_tz_time(from_tz, UTC_TZ, time, base_date=base_date)
+
+
+def utc_to_tz_time(to_tz, time, base_date=None):
+    return tz_to_tz_time(UTC_TZ, to_tz, time, base_date=base_date)
diff --git a/partner_tz/views/res_partner.xml b/partner_tz/views/res_partner.xml
new file mode 100644
index 000000000..70e15379d
--- /dev/null
+++ b/partner_tz/views/res_partner.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="view_partner_form_inherit" model="ir.ui.view">
+        <field name="name">res.partner.form.inherit</field>
+        <field name="model">res.partner</field>
+        <field name="inherit_id" ref="base.view_partner_form" />
+        <field name="arch" type="xml">
+            <field name="vat" position="before">
+                <field name="tz" />
+            </field>
+        </field>
+    </record>
+</odoo>