hello :D i dont know if its just me but i m still curious about how we can find ray's actual birthday, Kaiu said it's possible yet i feel like no one managed to figure it out, i know it's not necessarily the most crucial part of the tpn universe but i always wonder abt itt
Hi! ^^
He did mention that in a WSJ interview (translation found here):
In that same interview, he also mentioned how no one correctly guessed what was in Ray's letter left out as bait for Krone, and then confirmed in chapter 181.3 that it was what a lot of people initially suspected. He's also given conflicting answers about who names the children and his feelings on Noremma (or Sugita has as his proxy), so I could see it as one of those "y'all, the WSJ grind had me running so ragged for almost four years that it caused me to have serious health issues, it can be whatever date in this timeframe that you want it to be" type of deals with how little consequence it has unless one's really big on astrology (or for some lighthearted antics play into some teasing if he's actually younger than Norman lol, but I don't think they messed around with the order the children were tattooed as another layer of deception).
@temporoom's calculations are the most in-depth dive into the Grace Field identification markers that I've seen (posted here, here, here, and corrected version here) putting it between January 31st and February 5th. I think to be safe, the farm staff wouldn't put the fake date in the same month he was actually born in to further push the thought from unconsciously rising up in Isabella's mind, so I'd probably put it in February, though my personal biggest takeaway from all this is that it was another thing Isabella and the farm system denied him and separated him from his siblings.