ant-design/components/date-picker/locale/fr_BE.tsx

import CalendarLocale from 'rc-calendar/lib/locale/fr_BE';
import TimePickerLocale from '../../time-picker/locale/fr_BE';

// Merge into a locale object
const locale = {
  lang: {
    placeholder: 'Sélectionner une date',
    rangePlaceholder: ['Date de début', 'Date de fin'],
    ...CalendarLocale,
  },
  timePickerLocale: {
    ...TimePickerLocale,
  },
};

// All settings at:
// https://github.com/ant-design/ant-design/issues/424

export default locale;