My sister and her H both have maternal grandfathers that were born on the same day in the same year.
My grandma had her first born at age 25 and the baby weighed 8 pounds, 8 ounces and was born on the 22nd of the month. My mom had me at age 25 and her first born weighed 8-8 on the 22nd of a month. And I was age 25 when I had my first born on the 22nd of a month also weighing 8 pounds, 8 ounces.
When I went into labor with S23 (born on ex-hub’s birthday), I figured he’d be born the next day on a birthday shared with his grandmother, uncle and cousin (all on current husband’s side). Turns out he was in a hurry and got his own birthday.
I was born on my Mom’s 18th birthday. My nephew was born on his father’s (my brother’s) birthday. D1 is due with her first baby in October. Her due date is 3 days after her birthday so we are taking bets in the family if her baby will also be born on her birthday.
We were visiting a winery tasting room across the state the other day and in walked a couple I had worked with and haven’t seen since before we all retired 7+ years ago.
Your post gave me another weird coincidence. I was a manager and we had 8 managers in our group or whatever.
3 of us had the exact same birthday - meaning year, month and day. If it were the same day and month it wouldn’t surprise me, but 3 on the EXACT same birthday - that was odd.
I have an adopted cousin. Her due date was my aunt’s bday, and she was born on my uncle’s bday. That just seems “meant to be.”
That reminds me. I did newsletters for H’s school that had bday wishes. One year they had 3 custodians at the school and ALL THREE had the same birthday! Not the same year, but still.
At one point 3 people in my office suite had my birthday out of maybe 20? But one left. So now it’s just two.
My next door neighbor had a baby five years ago that was born on my Dad’s birthday (yep my dad with the egg story). She told me what they named him - it was my Dad’s last name (and my maiden name). It’s not a common name at all. And she didn’t know what my maiden name was.
My dad is doing his best to not be forgotten!
My daughter was also born in China a day later than my dads bday, but she used to say they shared a birthday because of the time difference. 
I am a property manager at a building for people 62+. We have some duplicate names of residents. I didn’t realize we also had duplicate names of the resident’s kids until one Friday a couple of months ago.
I had a phone call in the middle of the afternoon saying hi this is Gail. I just wanted to tell you that my mom JoAnne died this morning.
Not a half hour later I had another phone call. hi this is Gail. I just wanted to remind you that my mom Jo’s birthday party will be in the community room tomorrow.
I was like what the what? until I realized they were different people.
In law school, I met a classmate who was born the exact same date, month and year as me. I was born in HI and she was born on east coast. We said we were twins by different mothers. Haha!
When son was applying for his drivers license in Illinois, we ran into a problem. Some kid in Washington (the state) had the exact same DOB, first name, middle initial, and first five letters of the last name. And a juvenile record for drug possession. In sealed records.
We had to prove to the State of Illinois that son was a different person. Since the records were sealed, we couldn’t ask for other kid’s SSN or any other identifying info. I was able to learn the date of infraction. Then I had son’s high school certify that son was in attendance the day of infraction (and days before and after). The State of Washington sent a letter confirming son could not be their kid. State of Illinois accepted that and issued the license.
Son kept a copy of that letter in his car for years and we still have it accessible.
When I graduated from HS, there were 3 of us graduating HS the same year — same 1st & last name. One of them went to same flagship U as me and called me when she realized she accidentally picked up my registration packet at registration.
She and I both ended up transferring to U of OR for our sophomore year and living in same dorm. We even dated the same guy for a little while. She went back to HI after sophomore year and I stayed and graduated from U of OR.
I have a somewhat uncommon French last name. During the summer between my freshman and sophomore college years, it seemed like my financial aid package was late. A couple of weeks before school started I drove down to campus and visited Financial Aid.
They told me I was not receiving financial aid because I had flunked out—my GPA after freshman year was around 3.85!! Turns out a kid with the same first AND last name as me did flunk out, and they crossed MY name off the aid list.
He had a different middle initial than I did, and that adventure began my life long use of my middle initial! It was too late to apply aid to the fall semester so I had to pay the full bill, with ALL my aid applied to the spring semester, which ended up costing me almost nothing.
Fast forward 20+ years later, the wife of a friend of mine taught at a school with Mr. Flunk Out! Turns out he transferred to another school, got his act together, and graduated.
Well, the young woman who shared my name DID have different middle initials from mine, so I tried to use mine. We ended up giving each other the combination to the mailbox so we could check to see if our mail was in the other’s mailbox (nearly all the mail was for me—mostly letters from my brother & my mom). We told the student who sorted the mail but it was common for my mail to be in the other woman’s mailbox. I could tell by my mom & brother’s handwriting.
Yikes @Marilyn ! So glad it was cleared up.
Reminds me of D— she shares the 1st & last name of a pretty well-known (in HI) immigration attorney. She thinks restaurants are sometimes nice to her when they hear her name until later when they realize she isn’t the person they hoped she is with skills to help with their immigration issues.
For awhile, H would get calls, asking if he’d be DJ for weddings because there is a guy with same 1st & last name who IS a DJ for weddings.
H also got a series of calls from Scientology who claimed they had some of his money and wanted to return it—we finally got them to stop calling when we got aggressive and asked for supervisor’s name and contact info so he could be served with harassment complaint.
My maidan name is the same as a very famous attorney that was part of a famous trial being televised and everyone was watching. When my dad made restaurant reservations (back in the day when it was usually just last name), he was always given the best table and treated very well on the phone. The funny thing is they treated him just as well when he showed up. He happened to look enough like the guy that they thought it was him. I guess his expensive suits helped.
(My dad was a high level business exec and liked to think that it was because of his business reputation, but we all knew otherwise)
This isn’t that weird, but -
My son and I both went to University of MD, a very large school, for undergrad. As a freshman he wound up in the same dorm, on the same floor I was on when I was a freshman.
Small world story (from a few years ago, but came up again today): Every year here in our metro area here in the south, we go to the cemeteries before Memorial Day and Veterans day and put flags out at the graves of Jewish War veterans and Holocaust survivors. I was in one section with my flags, and happened to be wearing my college logo’ed visor, when a family came in with materials to clean off their loved one’s grave. I asked them if their family member was a veteran. They said yes, took a flag and borrowed my screw driver that we use to make a hole in the ground to hold the flag. She then asked, looking at my visor, “did you go to Vassar? In Poughkeepsie? “ When I said yes, she said “did you know Temple Beth El on Grand Ave? Turns out her father (the grave they were cleaning) was the cantor there for many years, starting in 1970, and she and her family grew up in Poughkeepsie!! We reminisced about theaters and stores that are long gone from that area. Such a small world!
Had that in my office of 10, 3 of us had the same birthday - odd.
That certainly beats the odds of the Birthday Paradox.