There's a difference between being late for something and being late for something without even knowing it. If you're running a few minutes late, you can text the people your lateness affects and let them know your estimated arrival time: No harm, no foul. But if you experience something called "time blindness," you might be extremely late and not realize it until it's too late. According to the Cleveland Clinic,
""Time blindness" refers to the inability to recognize when time has passed or to estimate how long something will take."
Contrary to popular belief, time blindness isn't a disorder but rather a way of describing behavior that can coincide with disorders like ADHD. There's a lot of contentious debate about whether time blindness is an ADA or accessibility issue, which somewhat ties into this story. A father hired his niece to babysit his kids, but he fired her when she was late twice in a row.