One day while in college, I received a phone call from my dad that my great-grandmother had passed away. After I hung up the phone, I went down the hall to see my then boyfriend (now hubby). He was just hanging up the phone after his mom called to say that HIS great-grandmother had passed away. Both ggma's on the same day. Both phone calls at the same time.
My ggpa, ggma, and gpa (their firstborn) all passed away on April 8th, but in the years of '79, '91, and '95 respectively.