I did several "random" searches, 10/22-24, 11/12-14, 12/10-12, (all Fri. outbounds), for the dates I noted the 8:00 am, 2:55 pm, 5:55 pm and 8:10 pm are n/s D1 flights.
For the "random" bookings noted above I didn't read the column headers carefully, for previous bookings the
last col was always D1.