Just curious what is the norm and what other people do.

My DD is 4.5 and hasn't napped in at least a year, maybe longer, unless she's sick. However, I have a family member who's 4.5 year old still takes a daily 3-4 hour nap. It's a bummer because we try to do stuff with them but it's hard to schedule around his nap or they have to leave early because they insist that he naps. Like, they will leave a fun birthday party early because it's nap time.

What is the oldest you know of a child still napping daily?