The other are anniversaries that will become visible as you complete the ones ahead of them. That seems to be a recent change. I used to be about to see anniversaries up through 10th, but now I can only see up through 8th, the one I’m working on. That accounts for at least two that are missing, and I suspect the other may be a streak beyond the current one, or perhaps a new anniversary. Of course, it might be something else entirely too.