How have I only just realised this?

My dd's is 25th September!!

Pure coincidence.

Loads of people I work with have September birthdays; obviously one too many port and lemons over Christmas/New Year!

I was born 40 weeks after New Year's Eve.

If you were born exactly 9 months later, conception didn't take place at the party.

I was born 9 months after my mum's birthday and our oldest was born 9 months after our wedding anniversary.

That's not how it works though is it?

40 weeks from your last period not 40 weeks since conception

It's been a while since I was pregnant but I think I've got that right

So conception was mid January?

This is so odd. People have sex all year round. With or without alcohol. Why would September birthdays be attributed to that?

Myself and DSis both have the same birthday month, our days are a little over two weeks apart (I was early!) .... nine months after DM birthday!

My eldest is a St Patrick’s Day baby

My child was born in September and I remember my fertile days were the second week in Dec, nowhere near Christmas (we were trying really hard)

There was a definite bulge in my school year in September after the dreadful and famous weather of the 1962/3 winter

Well technically you’d need to be born one week before 9 months after your grandmothers birthday for the conception to have happened that night. Because the 40 weeks/9months + 1 week is from the last period, not conception. Were you a week overdue?

So your Mum would have been on/finishing her period on your Grandma’s 50th?

Eh?

Surely that means you were conceived 2 weeks later?

My Parents had fun on Valentines... I was overdue but if I'd been on time

As teenagers my boyfriend and I realised we were born on the same date.

His parents invited my parents and I round to their Wedding Anniversary party.

What a coincidence...

It was MY parents wedding anniversary.

What were the odds of that?!

Born on the same day. Parents married on the same day. How WEIRD. What a COINCIDENCE.

Wait.

What’s EXACTLY 9 months after their wedding anniversaries?

Our birthdays that’s what.

Parents had sex on wedding anniversary. Shocker.

DS was conceived after a condom broke while having sex on boxing day.
He was born on the following 21st september a few days after his due date.

All my babies were born on the numerical number they were conceived on, regardless of due dates. They were all overdue. In fact, I used this formula to correctly predict my own sweepstake at work for my third, as I knew what day he would be born 🤣

The September birthdays aren't helped by the school admissions starting in September - so those who have a preference for eldest in the school year try and aim for a September baby. Plus add in Christmas/new years for the unplanned September babies! But it would be ~38 weeks later baby would be due as it's based on last period and assuming a 28 day cycle.

https://www.whenwasiconceived.com