public java.util.List<Integer> getOccurrenceDays() {
        if (occurrenceDays == null) {
            occurrenceDays = new com.amazonaws.internal.SdkInternalList<Integer>();
        }
        return occurrenceDays;
    }
<p>
The days. For a monthly schedule, this is one or more days of the month (1-31). For a weekly schedule, this is
one or more days of the week (1-7, where 1 is Sunday). You can't specify this value with a daily schedule. If the
occurrence is relative to the end of the month, you can specify only a single day.
</p>

@return The days. For a monthly schedule, this is one or more days of the month (1-31). For a weekly schedule,
        this is one or more days of the week (1-7, where 1 is Sunday). You can't specify this value with a daily
        schedule. If the occurrence is relative to the end of the month, you can specify only a single day.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/ScheduledInstanceRecurrenceRequest.java