The BIRTH of John the Baptist

June 24.

Question/quiz:

Why, when we, for the most part, celebrate the death of saints, do we celebrate the BIRTH of Saint John the Baptist?

Bonus: what other holy births do we celebrate?

Update: Karen answered the Bonus Question correctly, which leads to an update:

What two great occasions -- in fact, each is a Solemnity -- do each birth mentioned by Karen come to mind? (You have to read Karen's post to get this, unless, of course, you already know the answer.

P.S. Still waiting for the answer to the first question!