Nihon TV actually aired the fewest new anime of any major broadcaster over this period, but their slate is made up of a decent percentage of series that are somewhat notable.
General boilerplate stuff:
If you’re curious about the details, you can find the data I’ve gathered on this spreadsheet. Note on the format: the master list has just the networks, timeslots, and years of airing. Other sheets contain the shows aired in a given year and those aired on non-Japanese TV, with relevant links for the numerous series for which the Japanese wikipedia page didn’t provide sufficient information on the timeslot.
For each broadcaster, I’ll be asking two questions. First, which, if any slots did they have dedicated to anime in general? To qualify as an anime slot for the purposes of this exercise, a timeslot has to have aired premieres of at least 3 TV anime from 1994 to 2000. This excludes, for example, the Fuji TV Sunday 18:30 slot, which has been running Sazae-san for a really long time. I’m more interested in timeslots that would have been available to new shows during this period.
Second, which, if any shows did that broadcaster air after midnight? I want to give as complete a view as possible on the stance different companies took in regards to airing anime late at night. Since I’ve been poring over the data, I already have a decent idea of what the answer is going to be, but it’s neat to look at how different broadcasters’ stances were during this period.
One of the fruits of digging into the adaptations of manga produced in 2011 has been a treasure trove of TV anime ratings data. Which, in turn, holds heaping helpings of unrelated but utterly fascinating information.
My favorite tidbit so far? Timeslots that get designated to run a certain kind of show are much more prevalent than I, at least, had thought. People may deify noitaminA for its stellar pre-Fractale record, but if you want to talk anime-focused timeslots with godly 7-year runs, there’s at least one very prominent contender. The Nihon TV 24:50 timeslot (plus/minus 10 minutes, depending on the quarter) hosted the following shows from 2000 to 2011:
Show Title (Airdates) (Ratings for First Episode)
Hidamari no Ki (2000-04) (3.2)
Hajime no Ippo (2000-10) (4.8)
Tenchi Muyo GXP (2002-04) (4.3)
Hanada Shounen-shi (2002-10) (3.1)
Air Master (2003-04) (4.4)
Captain Harlock [TV Airing of Endless Odyssey OVA] (2003-10) (3.4) Gokusen (2004-01) (3.8)
Monster (2004-04) (3.2)
Akagi (2005-10) (2.4)
Ouran High School Host Club (2006-04) (2.1)
Death Note (2006-10) (3.4)
Buzzer Beater (2007-07) (2.5)
Kaiji (2007-10) (3.2)
Real Drive (2008-04) (2.0)
One Outs (2008-10) (2.5)
Souten Kouro (2009-04) (2.6)
Kimi ni Todoke (2009-10) (2.8)
Rainbow (2010-04) (2.2)
Kimi ni Todoke [cut reair] (2010-10) (2.1)
Kimi ni Todoke Season 2 (2011-01) (2.1)
Kaiji Season 2 (2011-04) (2.3)
Chihayafuru (2011-10) (2.4)
Note in particular the period from 2004 to 2011. That’s some serious all-around ass-kicking, a double whammy of ratings that aren’t bad (especially for 12:50 in the morning) and maximal critic-pleasing potential. By all accounts, this timeslot is currently plugged; Chihayafuru’s second season aired at 25:59, and I can’t find anything currently airing in it. But still, phenomenal run. I guess I’m adding timeslots to the list of industry-related things that really ought to be looked into.
Edit: Corrected the title to reflect the actual day of the timeslot.