I have 4:45 on the 19th. I would have preferred your time. We have an 11:30 ADR at Via Napoli that afternoon and so totally wont be hungry at 4:45, But I wasnt passing it up!
11/20 Wanted the 19th, but couldn't get in. Oh well, at least we got our back up date for our ideal time window + I was able to shift my most important ressie prev for the 20th to the 19th- i.e. wound up being super easy to flip flop days.
Many have ADRs for November, including a few on November 19th, the first day you can during the preview. There may be earlier seatings during AP, press, DVC etc previews but it has not been announced and they may not be!