It's 1:15 pm local and I just tuned into 12. If I press the channel 12 buttons on my smart TV I get sent to "12-12" which seems to be the same as "12-1". All the subs seem to be there and reception in the SE Valley is OK with an indoor UHF antenna. If I use the channel up button I land on "12-1". Don't know what "12-12" is. Dupe perhaps?
The 12.12 is the old VHF facility. They did the same thing with 8-8 in Portland which got converted this week.