__renderMonthNavigation(month, year) {
    const nextMonth =
      this.centralDate.getMonth() === 11
        ? getMonthNames({ locale: this.__getLocale() })[0]
        : getMonthNames({ locale: this.__getLocale() })[this.centralDate.getMonth() + 1];
    const previousMonth =
      this.centralDate.getMonth() === 0
        ? getMonthNames({ locale: this.__getLocale() })[11]
        : getMonthNames({ locale: this.__getLocale() })[this.centralDate.getMonth() - 1];
    const nextYear = this.centralDate.getMonth() === 11 ? year + 1 : year;
    const previousYear = this.centralDate.getMonth() === 0 ? year - 1 : year;
    return html`
      <div class="calendar__navigation__month">
        ${this.__renderPreviousButton('Month', previousMonth, previousYear)}
        <h2 class="calendar__navigation-heading" id="month" aria-atomic="true">${month}</h2>
        ${this.__renderNextButton('Month', nextMonth, nextYear)}
      </div>
    `;
  }
@param {string} month
@param {number} year
@private