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From: "Dan Treadway" <>
Subject: Re: [Fwd: Finding birth dates.]
Date: Fri, 9 Jul 1999 06:32:20 -0500


This formula pops up every once in a while. Only trouble is, it doen't
always work right. This formula assumes all months have exactly thirty
days, and it just ain't so.

Use it if you like, but always check your work with another method.

---
Dan Treadway
postal: P. O. Box 72, Gilbert IA 50105
email:
web: http://www.netins.net/showcase/treadway

-----Original Message-----
From: Violet O, Guy <>
To: <>
Date: Thursday, July 08, 1999 10:38 PM
Subject: [Fwd: Finding birth dates.]

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>Hi List:
>
>Need a Date Calulator? An e-mail buddy sent it to me from Oregon.
>
>Violet
>07/08/99
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>Subject: Finding birth dates.
>Date: Wed, 7 Jul 1999 17:22:21 -0700
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>
>8870 Formula for Determining Birthdates:
>
>Use this formula when the tombstone lists no date of birth, but
>does list the date that a person died - say May 6, 1889 and was
>71 yr, 7mo, 9 days old. In order to arrive at the birthdate, one
>has only to use the 8870 formula to quickly get the date of birth
>rather than taking time to count backward.
>
>The 8870 formula using the above date and age as an example:
>
> Date of death - 1889 May 6 = 18890506 (where
> 1889=year, 05=month, 06=day)
> Age at death - 71 yrs 7 mo 9 days = 710709 (where
> 71=years, 07=months, 09=days)
> Subtract 710709 from18890506 =18179797
> Subtract the Constant (8870) from 18179797
> Result = 18170927 (where 1817 = year, 09 = month, 27 =
> day. This person was born 27 Sep 1817)
>
>Hi to all,
> This was passed along to me today from someone who loves genealogy
in NB.
>Hope it helps. Marlene
>
>If the age in months and age in days are less than the month and
>day in the date of death, you can just subtract directly, i.e.,
>
> Date of death - 1868 Dec 25
> Age at death - 45 yrs. 5 mo 4 days
> Subtract 45 from 1868 = 1823
> Subtract 5 from 12 = 7
> Subtract 4 from 25 = 21
> Result = 1823 Jul 21 or the date of birth
>
>
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