My cabbage seed sprouted after a afternoon? On the packet it said it would take 14-21 days. Is this ordinary?

On the packet it said it would take 14-21 days.

Is this ordinary?
Answers:    14-21 days means how long until the sprouts would in actual fact come out of the soil... were you growing them within soil or just a soggy paper towel? Because I've have radishes and other seeds sprout surrounded by 1 day contained by a wet newspaper towel.

If they grew out of the soil that fast, consider yourself an ¨ıber-gardener.
Yes, in attendance are many seed that will surprise you.