bug#80118: Don't just say "invalid date"

[Dan Jacobson]

>  $ date --debug -d '01/30/2026 02:00 PM ET'
  date: warning: value 1 has less than 4 digits. Assuming MM/DD/YY[YY]

What does it mean "value 1" ?

Don't tell me. Just make the error message clearer please.

And I don't see anything with less than four digits, unless you want four digit 
days and months...