function calendarTranslation(lang) {
  const currentYear = new Date().getFullYear()

  const months = Array.from({length: 12}, function(_, index) {
    let name = new Date(currentYear, index).toLocaleString(lang, { month: 'long' })
    return ({index, name })
  })

  const days = Array.from({length: 7}, function (_, index) {
    let name = new Date(currentYear, '00', index).toLocaleString(lang, { weekday: 'long' })
    let order = new Date(currentYear, '00', index).getDay()
    return ({ name, order })
  })

  return {
    months,
    days
  }
}