I'm not sure if my wording is correct, but the general idea is:
If 1 day equals a 1000 years, then how long (in days or months) would 2 seconds (2 seconds of a day) be?
24 hours=1000 years
24x60 minutes=1000 years
24x60x60 seconds=1000 years
1 second=1000/(24x60x60) years
from my side converting the solution into days or month without any assumption is not possible as this is a hypothetical question.