January 30th with Flurry. That’s not too bad. It’s kind of fun to see which villagers have a birthday with you. It kind of makes me want to interact with this little hamster at least once. :3
Except for February 29th, there isn't a single villager in AC:NL that doesn't have a birthday on any given day in the year as of the update. And in fact the update introduced so many characters between the 50 rv villagers, sanrio, and amiibo villagers from other franchises, there are 39 instances of two villagers having the same birthday.
My birthday is shared with Beardo. I personally think he looks silly, would much rather have either a different birthday or different villager to share it with
My wife's birthday is shared with Bubbles. She doesn't find that amusing. Her dad shares it with Curt, and that fits him so well it's hilarious