The minimum requirement to pass the PropW challenge is to trade for at least 5 trading days (not consecutive).
Since PropW has no limitations on trading hours, the process of "opening and closing" a position within a natural day is defined as a valid trading day.
If only the opening of a position is carried out within a natural day, we do not count it as a valid trading day, and we use the closing of an account within a natural day as a sign of a valid trading day.