2y ago

Twins born right near midnight could have different birthdays

lemmy.world

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Adding onto this twins born near midnight around 1999 to 2000 could be born in different milleniums.
- Actually, this millennium began 2001.
  
  TIL they never had a year 0. So the whole damn calendar is an off by one error 🤯
  
  Seems easier to be like everyone else and just say it starts at 0 and just accept the first millennium is missing a year.
  
  Wow I learned something new. I had to search it after reading your comment and it is indeed 2001. https://www.timeanddate.com/counters/mil2000.html
Twins born on an airplane in flight could be born in different countries.
- Technically yes, but the birth certificate for both might be filled with the place of the landing simply.
  At least for German law (and probably other ones) that's what de facto would be required: You enter the exact town the child was born in, if known (but when moving 800 km/h over invisible town boundaries, who takes note of in which town you were at the exact moments the two were born?), or the place where the mother sets foot to ground otherwise.
  
  In the US and Canada at least, there are laws that cover granting birthright citizenship to people born in their airspace of those countries. And since they share a border, it could happen, in theory. Would also depend on the citizenship status of the parents, I imagine…
  In practice, I would hope you are right, this would not cause any issues. But if it happened, it would probably get news attention, and who knows what follows from that.
One of them could be born February 29 and lose out on a bunch of birthdays compared to their twin.
- What if the first twin to come out was on Feb 29 and the second twin came out on March 1st? Who would be older?
Twins born around midnight between August 31st & September 1st 2002 could have meant one twin getting a UK Child Trust Fund, while the other twin missing out. https://www.gov.uk/child-trust-funds
And twins born during DST changeover could have the same birth time down to the second, but one hour apart.
- Or the older one could have a later birth time on the same birth day.

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