If:
(a) a person is receiving a youth allowance; and
(b) apart from this section, the person would cease on a particular day to be qualified for the allowance because the person has attained the maximum age for youth allowance; and
(c) the day falls in, but is not the last day of, a period for which an instalment of youth allowance is payable to the person;
the person continues to be qualified for the allowance until the end of that period.