Originally Posted by username

The criteria listed for the Airport Stand-By List only shows Status and Fare Class. It does not say Time: "This standby list will clear after check-in is closed, and is based on Premier status and fare class." That is why I wonder. Then, if it is Time, is it the time you check in (or get moved to the Standby List from the Reservation Wiatlist if you have not checked in) or the time you originally waitlisted?

The Reservation Waitlist does say "All travelers on waitlisted Global Premier Upgrades, Regional Premier Upgrades and MileagePlus Upgrade Awards: Sorted by Premier status of the redeeming account, then fare class and then time of request".