There's a set day before the actual day/night cycle starts I'm pretty sure.
its like this for me too
>walk into the Pokemon center
>they wish me happy birthday
what the fuck? is nintendo colluding with the NSA or some shit.
>>30237792
you set your birthday onto your 3DS system.
>>30237792
>me and youporn share a birthday
>baloons pop up on my phone
>freak the fuck out