docs: public void setLocale(Locale locale) {
          mLocale = locale;
          mWeekStart = Calendar.getInstance(mTimezone, mLocale).getFirstDayOfWeek();
          YEAR_FORMAT = new SimpleDateFormat("yyyy", locale);
          MONTH_FORMAT = new SimpleDateFormat("MMM", locale);
          DAY_FORMAT = new SimpleDateFormat("dd", locale);
      }