> Another question you could answer would be “if I start on a road trip at 6PM, what time would it be when I get to my destination 16 hours later?”. That would

> Another question you could answer would be “if I start on a road trip at 6PM, what time would it be when I get to my destination 16 hours later?”. That would be 6 + 16 mod 12 which is 10. So many things wrong here. Why would you represent 6PM as "6"? And then you mod 12, which will only give the correct response between 12AM and 11AM. If you'd said 18 hours later you'd think you were arriving at midnight. It's a bad example anyway; why would you care what hour you arrive but not which day?