Excerpt from my latest Sasstrology article (please leave comments at the Sasstrology site).
"Your Saturn Return is an astrological milestone that occurs at least twice in your life (assuming you live until retirement age). It occurs when transiting Saturn — the planet of rules, reality and responsibility — passes over your natal Saturn. It’s a crossroads, where your personal handling of reality meets external reality head-on. Your first Saturn Return (which occurs anytime between the ages of 29-31) marks your passage into adulthood. Your second Saturn Return (between the ages of 59-61) is where you decide how you’ll incorporate the realities of getting older. Both Returns push you to decide what you can make real, and what you have to let go of."