4 ms·

Traffic lights were a concern for Y2K... but it turns out that in the real world, traffic lights just need a day-of-week so they continue to work fine.

• mulmen 8y ago
  Ok but what happens when the date overflows? Will they still know Monday is Monday or will they start thinking Monday is Sunday?
  • nomel 8y ago
    I don't think you would need a complete date for that. I would think the modulo 7 of a day counter, with a little extra logic to handle leap year, would be enough.
    • mulmen 8y ago
      Mod 7 is not a bad idea but if that is the algorithm why do you care about leap years?