I understand I was around 18 months (I even remember someone seeing me and being surprised that I was walking….) – and apparently I needed something in both my hands to walk (ie, a cracker in each hand was fine…)
One of my kids was 17.5 months. I remember because Nursery in our church starts at 18 months, but we were being allowed to visit a week early with Mom staying…. and there he was crawling around with all the other kids walking…. but after a couple of weeks he started walking.