4.—(1) Subject to regulation 15 (entitlement under special rules for terminal illness), Child Disability Payment may be paid in respect of an individual who is aged at least 3 months and is under the age of 18 years.
(2) Child Disability Payment may only be paid in respect of an individual who is under the age of 16 years on the day on which entitlement begins in accordance with regulation 24 (when an application is to be treated as made and beginning of entitlement to assistance).
(3) Where an individual was born on 29 February, the individual’s birthday is to be taken to fall on 28 February in a year which is not a leap year.