I know that originally Award seats (Saver) are added into inventory sometime between midnight and 3am 331 days in advance. I also know that extra Award seats are added "sometime" later in the year. Will these additional seats also be added between midnight and 3 am? Or can they be added at anytime during the day?

The reason for this question is that I couldn't get the exact date I wanted for my trip next Jan. so I waitlisted for the following day. If I check the website each morning at 8 or 9 am will that be sufficient? Should I also phone UA?
Phil