You hit a lot of milestone birthdays when you’re young. There’s your first birthday, of course, and also the one where you turn 10 (finally, double digits!). At 13, you’re a teenager. At 16, you’re probably thinking about driving. At 18, you can vote; at 21, you can get into bars.

You hit a bunch of milestones later in life as well, and many of them have to do with retirement. Knowing these age milestones can help you better prepare for life after work. In my latest for the Associated Press, see how close you are to one of these milestones.