code: private Observance getObservance(int year, int month, int day, int hour, int minute, int second) {
  		Boundary boundary = getObservanceBoundary(year, month, day, hour, minute, second);
  		return (boundary == null) ? null : boundary.getObservanceIn();
  	}
docs: Gets the observance that a date is effected by.
  @param year the year
  @param month the month (1-12)
  @param day the day of the month
  @param hour the hour
  @param minute the minute
  @param second the second
  @return the observance or null if an observance cannot be found