My birthday is June 3. I was due on 17 May. My maternal grandparents married June 3, and then also finalised their divorce that day too. My paternal gf died on June 3 1966, as did his brother in 1996. My brother was due oct 17, but born nov 2 - narrowly missing paternal gf birthday nov 1, but landing on maternal gf birthday instead.
Starting with me, June 3, my partners birthday July 6, 4th child, aug 7, eldest sept 4, second oct 6, third jan 1. One month after another. It’s really strange.