Not sure why but I'm feeling like a lot of people start really early around here. (?)

Dh said one of his coworker's kids was potty trained for daytime by 20 months.

Dd is 19 months and so not ready, and from what I've been told 2 years is usually the minimum that *most* children are developmentally ready (although I also know not all parents do it that way, some just pick a time when, say, the family has a break from work.) I know all kids are different, but what gives? I suddenly feel like dd is behind (although I'm fine with that and not looking forward to public restrooms with dd!)

Am I just in denial that we are getting to that stage?