They aired it last night at 2:30am. It's weird they didn't announce it, but what they did last night was play Law & Order at pretty much the regular time (started about 7 minutes late), then had the news and joined Leno in progress (so it was on the HD feed but they cut out the first few minutes). Then it was Conan, then Carson, then they ran the primetime shows they missed: 1 vs. 100 at 1:30 and Las Vegas at 2:30. They take the DT channel off the air after Carson, though, so they were only re-aired on the SD channel. They wouldn't have been in HD anyway, since anything tape-delayed is SD.