I think I might be missing the Tenacious badge

Question

The explanation for the Tenacious badge says:

• Have at least five accepted answers with a score of zero, and have those zero-score accepted answers account for at least 20% of all your accepted answers

• Only accepted answers at least ten days old are considered

• Community Wiki answers, deleted answers, and self-accepted answers are not included in any calculations

If I count correctly on my answers, I have 19 accepted answers in total. Out of these, 5 are 0-score not-self-accepted answers (and no CW either). The most recent of these 5 were answered on November the 15th at 13:10, which is twelve days ago.

Are my maths completely wrong, or does it just take some time for this badge to be awarded?

Answer 1

The requirement that seems to be in question is the 5 count. When you leave out your self-accepted asnwers (here, here and here).

This means you have:

• 19 accepted answers, but only 16 non-self-accepted
• 7 accepted answers with a 0 score, but only 5 non-self-accepted

This means your percentage is 5/16 or 31.25% so you're good there, but the difference in your question and the badge description is the wording (emphasis mine):

• Have at least five accepted answers with a score of zero, and have those zero-score accepted answers account for at least 20% of all your accepted answers

Whereas the badge says (again, emphasis mine):

Zero score accepted answers: more than 5 and 20% of total.

So it appears to be behaving like the description says, meaning you need a 6^th answer to qualify. I think the problem is just that the description here is wrong, the badge page is (or at lest seems to be) correct.