The treasure episode timeline

So I'm rewatching gumball because I haven't seen it in forever when I noticed the bank statements gumball looks at are dated in 1976 during October, ext.

Irl that'd make it 1988, making gumball sayyyy born on the 9th-10th or sum since the payment to steller corp was on the 13th

Granted ik this show is hella inconsistent with it's character details but I just wanted to mention it to see of anyone else noticed this before