assertTrue(rule.isTarget(23, 30, 1)); // 23:30 on Sunday
        assertTrue(rule.isTarget(22, 0, 1)); // 22:00 on Sunday (start time)

        // Within range (next day)
        assertTrue(rule.isTarget(1, 30, 1)); // 1:30 on Sunday (actually Monday morning)
        assertTrue(rule.isTarget(2, 0, 1)); // 2:00 on Sunday (actually Monday morning)

        // Outside range

    /**
     * Adds a new interval rule to the rule list.
     *
     * @param from the start time in HH:MM format
     * @param to the end time in HH:MM format
     * @param days comma-separated list of days (1=Sunday, 7=Saturday)
     * @param delay the delay in milliseconds to apply during this interval
     */
    public void addIntervalRule(final String from, final String to, final String days, final long delay) {