web/web_widget_datepicker_options/demo/web_widget_datepicker_options_demo.xml

<?xml version="1.0" encoding="utf-8"?>

<odoo>
    <record id="datepicker_options" model="ir.ui.view">
        <field name="name">datepicker_options</field>
        <field name="model">res.users</field>
        <field name="inherit_id" ref="base.view_users_form"/>
        <field name="arch" type="xml">
            <xpath expr="//page[@name='access_rights']" position="inside">
                <h2>Datepicker Demo</h2>
                <label for="date"/>
                <field name="date" options='{"datepicker": {"calendarWeeks": false}}'/><br/>
                <label for="create_date"/>
                <field name="create_date" options="{'datepicker':{'calendarWeeks': false}}"/>
            </xpath>
        </field>
    </record>
</odoo>