Odds of having three kids born on the exact same date – 7.5 out of 1 million. From Yahoo:
Written by DignanDaughter Kayla was born Tuesday, which was Oct. 2 — the same date her brothers were born.
Ayden Cotton arrived on Oct. 2, 2003; Logan was born Oct. 2, 2006.
The parents said they had a feeling their baby daughter might come a couple of days past her Sept. 30 due date. Sure enough, Jenna Cotton, 23, began having contractions early Tuesday, hours before a planned birthday party for the boys.

