Montgomery County OH@ Trails to the Past
How to calculate the date
of birth
From Platte Co, MO Historical/Genealogical
Society
In the event you don't have a
computer close at hand to do the calculating:
REMEMBER
8870
That's not an error: It's the
number to remember
when you want to find the birthdate
of someone
when you only have the date of
death and age.
How do you figure the birthdate?
Suppose the
person died May 6, 1889,
at the age of 71 years, 7 months,
9 days.
-
Write the year, month, day as:->18890506
-
Subtract the age at death:------->710709
-
This gives the figure:--------->18179797
-
Now subtract 8870:----------------->8870
-
The result is:----------------->18170927
Year 1817, 9th month (Sept), 27th day or
27 Sept, 1817
©1999-2000 Tina
Hursh
©2000 Peggy Tebbetts
©Copyright 2003 - 2012 Katy
Hestand
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