how to change date-picker's default Day of week in odoo?

Currently in odoo date picker shows from Su-Mo-Tu-We-Th-Fr-Sa i want to make it starts from Mo-Tu-We-Th-Fr-Sa-Su can anyone help me how to achive this as i checked in default odoo 12 addons it is hard coded. web/static/lib/moment/locale/.. language wise different files.