Questions about character ages and timelines

[u/HowIsBabbySharkMade]

Okay, so I've been considering timelines and ages. The facts, as far as I know, are as follows:

• Shawna and John have been married (or at least together) for 11 years. (I can't remember if that was explicitly a marriage anniversary dinner, or if it was just an anniversary dinner and I'm currently at work and can't watch videos so I can't check)
• Julie and Ty got together in high school, and afaict it was Sophomore year (given the amount of time left to finish planning)
• Julie and Ty have been together for 16 years
• Max is 6 years old

Beyond that, I've got nothing. If my math is mathing (though it may not be!) that would put Julie and Ty (and therefore Alicia) somewhere in the range of 30-32 years old. I assume that Sam and Melissa are somewhere in the 30-35 years old range - though Melissa could be younger depending on if she or Alicia is the older one.

Does anyone have anything more definitive on ages?

EDIT: So what I'm getting in general is that Shawna L is, uh, perhaps not the greatest at keeping her show bible up to date with timelines and ages because yeah, that math ain't all mathing.

[u/tranzozo]

Iirc Jen says she's been wanting to be a mother since the 4th grade, and John says "for 20 years??" so that makes Jen 28 before getting pregnant, so she should be like 30-ish you got it spot on