I, too, can confirm the [0] marker on 10/28/17. And I also believe this is the start of winding the clock.
Don't know if it's important, but the two posts that were made by ID: BQ7V3bcW on 10/28/17 were NOT included on the map that Q confirmed when they created their first tripcode. See:
http:// archive.4plebs.org/pol/thread/148777785/#q148779656
Do we think this matters? The 10/28/17 posts have to be Q, but I just thought I'd throw that out there.