Two Two

I stated reading James Joyce's Ulysses today.
The Second of February. (2/2)
I was not aware until I started reading that the date of first publication in book form was 2nd February 1922. This was Joyce's fortieth birthday - he wass born on 2nd February 1882. My own birthday has two twos in it.
Looking up coincidences on Wikipedia the following leaps out from the short entry -

The odds that two people share a birthday, for example, reaches 50% with a group of just 22.

Spooky.

Synchronicity or coincidence?

Here is the source of the birthday probability statement - Probability.