It was a very good year.

When the amount of Blips you posted coincide with the year you and your Beloved were born in, it's only natural to commemorate that.

(I was already a mature 22 days when he was born though. Young pup that he is.)

I am the youngest of 7, with a 9 year gap between me and the sibling above me, and a 17 year gap between the oldest and me. It was unfortunate for our brother that I wasn't the boy he had hoped for; he remained the only one.
The Beloved only has brothers, though not quite so many as I have sisters. It's all about balance.