function isSplitWeek(vCalendarWeekNumbering, oLocale) {
		var oLocaleData = LocaleData.getInstance(oLocale);

		// only applies for en_US with default CalendarWeekNumbering (WesternTraditional is default in en_US)
		return (vCalendarWeekNumbering === CalendarWeekNumbering.Default
				|| vCalendarWeekNumbering === CalendarWeekNumbering.WesternTraditional)
			&& oLocaleData.firstDayStartsFirstWeek();
	}
Determines if the split week algorithm should be applied (the first day of the first calendar
week of the year is January 1st).

@param {module:sap/base/i18n/date/CalendarWeekNumbering|{firstDayOfWeek: int, minimalDaysInFirstWeek: int}} vCalendarWeekNumbering
  calendar week numbering or object with fields <code>firstDayOfWeek</code> and
  <code>minimalDaysInFirstWeek</code>
@param {sap.ui.core.Locale} oLocale the locale used for the week calculation
@returns {boolean} if the split week should be applied