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TL;DR: it’s actually November.

Okay so 9 months prior to August is…

You can simply subtract 9 or add 3 to the month number. If you want to verify, break out your hands and get counting months. Start with no fingers raised for November, then raise a finger every month you count, and see where you get to when you have 9.

Wait fuck does that include the first month

A duration is going to include the starting and ending months. Do a very simple example: January (1) to February (2) is one month (2 - 1 = 1).

If you feel silly for messing this up, don’t. Off by one errors are incredibly common. I always count them out just to double check em myself.

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MintyAnt@lemmy.world ⁨2⁩ ⁨weeks⁩ ago
This person maths. Btw which version of Linux?

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- Enkers@sh.itjust.works ⁨2⁩ ⁨weeks⁩ ago
  NixOS
  
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  - medem@lemmy.wtf ⁨2⁩ ⁨weeks⁩ ago
    Try Guix instead :)
    
    Big, welcoming community; Fully libre distribution; Time-tested Scheme (Guile) instead of that stupid nix stuff.
    
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jballs@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago
But doesn’t the 9 months of pregnancy technically start on the first day since a woman’s last period? That’s what makes anti-abortion laws even more absurd, because you can be 8 weeks pregnant if you only had sex 5 weeks ago.

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- Enkers@sh.itjust.works ⁨2⁩ ⁨weeks⁩ ago
  Damnit Jim, I’m a computer scientist, not a biologist!
  
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- mkwarman@lemmy.mkwarman.com ⁨3⁩ ⁨weeks⁩ ago
  I thought it was 9 months from the first missed period
  
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  - jballs@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago
    Lol had to look this up because it’s complicated.
    
    flo.health/pregnancy/…/how-long-is-pregnancy
    
    “Ovulation [when an egg is released from your ovaries ready for fertilization] typically takes place around two weeks after the first day of your last period, and this is when a baby would be conceived. But because you won’t know that you’re pregnant until you’ve missed your next period, approximately two weeks later, you’ll already be four weeks pregnant when you get your positive test result. At that point, you’ll have approximately 36 more weeks to go,” Dr. Celestine says.
    
    So pregnancies typically last 10 months, but we say 9 months since you don’t even know you’re pregnant until you’re 4 weeks pregnant. But anti-abortion laws still count that 4 weeks.
    
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    monotremata@lemmy.ca ⁨2⁩ ⁨weeks⁩ ago
    By that logic conception only occurs when you’re two weeks pregnant. That’s an extremely silly way to count it. (Not saying you’re wrong, just that it’s frustrating.)
    
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