3 ms·

So how old is a not-yet-1-year old?

• atwood22 4y ago
  N days or N months depending on how old the baby is.
  • randomdata 4y ago
    And it turns out that 0 days, 0 months is 0 years.
  • rcoveson 4y ago
    And before an hour has even passed, we'd probably say "minutes old" or perhaps "not even an hour/day old", all to avoid saying "zero days/months/years old". But some might still say zero days old, and they'd be both understood and correct (at least logically if not stylistically). That's the "implicit zero" everybody is talking about. We avoid saying it, but that's just a convention of communcation. Logically it's there. You're zero days old before you're one day old.
• nomel 4y ago
  Elapsed time timers start at 0. Time is continuous. The elapsed time being “out of the womb”, that we call “age”, starts near 0. Five minutes after birth, the baby has been in the world for, or it’s age is, five minutes. If someone asked how old a new baby is you could hear “3 weeks”. Another definition might be from conception. But birth being “one year old” is illogical. The sperm didn’t even exist yet, one year before birth.
• xxs 4y ago
  Your mistake is using years - use milliseconds (or nanoseconds) when you wish to express a duration. Years don't even have the same duration/length (leap years, and leap seconds)