A person who is not a biological or adoptive parent can qualify to seek parental responsibilities if the child is not in a parent’s physical care, or if the non-parent provided physical care for at least 182 days and files within 182 days after that care ended. Standing is a threshold question the judge must resolve before the case proceeds. The Colorado statute sets these time-based and placement-based pathways for non-parents to get into court. If standing is found, the case moves forward to a best-interests analysis. These rules are designed to acknowledge stable, parent-like bonds formed outside biology or adoption. They are laid out in Colorado’s allocation of parental responsibilities statute.