My name is Maggie. Several years ago, I spoke to my sister (well, technically half-sister) on the phone and said I was retiring from my job. She said she was too. Next time we talked on the phone, I told her I retired on June 2, 2006 -- she said, you are kidding! I retired on that very same day! This with no discussion between us about plans or dates we were thinking about, or anything. I found that very coincidental.
Another strange chain of events related to my half sister occurred when we met (we didn't meet until we were adults).