According to Nevada law, a child's best interest is advanced by ensuring that after divorce minor children have frequent associations and a continuing relationship with both parents and to encourage parents to share the rights and responsibilities of child rearing.

Joint physical custody refers to awarding custody of the minor child or children to BOTH PARENTS and providing that physical day-to-day type parenting responsibilities are shared by the parents in such a way to ensure the child or children of frequent associations and a continuing relationship with both parents.

Although joint physical custody must approximate an equal timeshare, given the variations inherent in child rearing, such as school schedules, sports, vacations, and parents' work schedules, an exactly equal timeshare is not always possible. Therefore, to approximate an equal timeshare but allow for necessary flexibility, the Nevada Supreme Court has held that each parent must have physical custody of the child at least 40 percent of the time to constitute joint physical custody. If a parent does not have physical custody of the child at least 40 percent of the time, then the arrangement is one of primary physical custody with visitation.