ant-design-vue/components/date-picker/locale/it_IT.js

import CalendarLocale from '../../vc-calendar/src/locale/it_IT'
import TimePickerLocale from '../../time-picker/locale/it_IT'

// Merge into a locale object
const locale = {
  lang: {
    placeholder: 'Selezionare la data',
    rangePlaceholder: [
      'Data d\'inizio', 'Data di fine',
    ],
    ...CalendarLocale,
  },
  timePickerLocale: {
    ...TimePickerLocale,
  },
}

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

export default locale