Board Thread:General Discussion/@comment-7526254-20150520160921/@comment-4839682-20151027182849

It depends on when Henry's birthday is, too. I think someone roughly determined that it's early in the year once, so I don't personally find it a stretch to believe he's had 3 birthdays since Emma arrived.

Besides, it's a TV timeline, it's not going to be easy to set it into stone, there has to be some flexibility, and there were always be parts that don't perfectly match.