It seems like time schedule isn't up yet? Awaiting it nervously... hope there isn't much overlap with Russian Nationals.
Don’t know how official this is but this info comes from the ticketing website
業界初!チケット転売防止・オークション対策を施した電子チケット販売中!音楽などのイベントやコンサートチケットなどの先行販売のほかチケットを販売するサイトです。
tixplus.jp
Tournament name
89th All Japan Figure Skating Championships
Venue Nagano City Wakasato Multipurpose Sports Arena Big Hat
Tournament schedule
Day 1 [Friday, December 25]
12: 30-Men's Single (Short Program)
17:00-Women's Single (Short Program)
* The competition is scheduled to end around 21:10
Day 2 [ December 26th (Sat)]
15: 30-Ice Dance (Rhythm Dance)
17: 04- Men's Single (Free Skating)
Awards Ceremony (Men's Singles)
* The competition ends around 21:10 and the awards ceremony ends at 21: Scheduled around 45
Day 3 [Sunday, December 27]
15: 30- Ice Dance (Free Dance)
17: 04- Women's Single (Free Skating)
Award Ceremony (Women's Single, Ice Dance)
* The competition is scheduled to end around 21:10 and the awards ceremony is scheduled to end around 22:00.
<Notes>
* Opening is scheduled for 2 hours before the first competition start time on each day.
* Opening hours and start times are subject to change.
* The start and end times of each event may change due to the progress of the day.
* The start time of the ice dance competition has changed because there are no more pair competitions. Ticket price (tax included)・ Arena seats / 16,000 yen
・ Conditional arena seats / 16,000 yen
・ S seats / 13,000 yen
・ Conditional S seats / 13,000 yen
・ A seats / 10,000 yen
・ Wheelchair seats / 13,000 yen